MILL CREEK WATER DISTRICT    •    6415 Hickory Grove N    •    Quincy, IL 62305

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MILL CREEK WATER DISTRICT


Board Meeting is First Tuesday of the Month at 5:00 pm

BOIL ORDER LIFTED

FROM: Dustin Goodwin, ROINC
DATE: June 17 2017
TIME: 11:30 A.M.

The boil order has been lifted for the following areas:

1) From Cannonball Road @ Antoinette Avenue intersection heading north to Ambiance
2) Antoinette Avenue
3) Esther Avenue
4) Robins Glen Subdivision
5) Crystal Heights Subdivision
6) Koch's Lane @ Cannonball intersection heading East
7) Hunter Estates
8) 5434 and 5428 Sherwood Lakes West
9) 1925 Sherwood Lakes
10) 2103 Cedarwood Lane
Once water is turned off a boil order will be in effect until further notice.


 

 

 

Annual Drinking Water Quality Report for Calendar Year 2016

 

Mill Creek Water District

This report is intended to provide you with important information about your drinking water and the efforts made by the water system to provide safe drinking water.  This report includes drinking water facts, information on violations (if applicable), and contaminants detected in your drinking water supply during calendar year 2016.  Each year, we will provide you a new report.  If you need help understanding this report or have general questions, please contact the person listed below.

 

 

Este informe contiene información muy importante sobre el agua que usted bebe. Tradúzcalo ó hable con alguien que lo entienda bien.

Contact Name:

Dustin Goodwin

Telephone Number:

(217) 224-9343

E-mail (if available)

millcreekwater@comcast.net

 

Sources of Drinking Water

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and groundwater wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity.

 

Our main source of water comes 4 groundwater wells and back-up water interconnect with purchased surface water from Quincy, Il.

 

Contaminants that may be present in source water include:

·          Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations and wildlife.

·          Inorganic contaminants, such as salts and metals, which can be naturally occurring or result from urban storm water runoff, industrial, or domestic wastewater discharges, oil and gas production, mining, or farming.

·          Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses.

·          Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff, and septic systems.

·          Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities.

 

Other Facts about Drinking Water

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the EPA's Safe Drinking Water Hotline at (800) 426-4791.

 

In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health.

 

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. EPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline (800-426-4791).

 

Source Water Information

 

Source water name

Type of water

Report Status

CC 02-Meter Quincy (Seasonal)

SW

Active

Well 1

GW

Active

Well 2

GW

Active

Well 3

GW

Active

Well 4

GW

Active


 

Source Water Assessments

Source water protection (SWP) is a proactive approach to protecting our critical sources of public water supply and assuring that the best source of water is being utilized to serve the public. It involves implementation of pollution prevention practices to protect the water quality in a watershed or wellhead protection area serving a public water supply. Along with treatment, it establishes a multi-barrier approach to assuring clean and safe drinking water to the citizens of Illinois.  The Illinois EPA has implemented a source water assessment program (SWAP) to assist with wellhead and watershed protection of public drinking water supplies.

 

We want our valued customers to be informed about their water quality. If you would like to learn more, please feel welcome to attend any of our regularly scheduled meetings. The source water assessment for our supply has been completed by the Illinois EPA. If you would like a copy of this information, please stop by or call office at (217) 224-9343.

 

To view a summary version of the completed Source Water Assessments, including: Importance of Source Water; Susceptibility to Contamination Determination; and documentation/recommendation of Source Water Protection Efforts, you may access the Illinois EPA website at http://www.epa.state.il.us/cgi-bin/wp/swap-fact-sheets.pl.

 

Source of Water: MILL CREEK PWD to determine Mill Creek PWD's susceptibility to groundwater contamination, a Well Site Survey, published in 1986 by the Illinois EPA, was reviewed. During the survey of Mill Creek PWD's source water protection area, Illinois EPA staff recorded potential sources, routes, or possible problem sites within the 400 foot minimum setback zones, the 1,000 foot Phase I Wellhead Protection Area (WHPA), and the Phase II WHPA for Wells #1, #2, #3 and #4. Fifteen potential sources of groundwater contamination are present that could pose a hazard to groundwater pumped by the Mill Creek PWD community water supply wells. These include a pile of material, a quarrying of material, a mining other than sand/gravel or stone, a below ground fuel storage, a manufacturing process, a septic tank, a church/library, an electrical generator/substation, a fertilizer warehouse, an exterminator, two lagoons, a well, an above ground fuel storage, and a pesticide/fertilizer commercial application or warehouse. Based on information provided by Mill Creek PWD water supply officials, the following facilities, also indicated as potential sources in the site data table, have changed their status: the church (changed to Chelsea Theater, which is entertainment), Reiter-PCS Sales (changed to Richter-PCS Sales), and Counter Top Processing (changed to Prince Mfg., which is a manufacturing storage).The Illinois EPA considers the source water of this facility to be susceptible to contamination. This determination is based on a number of criteria including: the land-use activities in the recharge area of the wells, the available hydrogeological data, monitoring conducted at the wells, and monitoring conducted at the entry point to the distribution system.

 

Source of Water: Quincy, Illinois, EPA considers all surface water sources of community water supply to be susceptible to potential pollution problems, hence, the reason for mandatory treatment for all surface water supplies in Illinois. Mandatory treatment includes coagulation, sedimentation, filtration, and disinfection. Within the Illinois portion of the Mississippi River Watershed, which is illustrated in Figure 3, many commodities, including manufactured goods, petrochemicals, and pesticides are transported along the river system. The production, storage, and transportation of these commodities are a major concern, especially when occurring near surface water intakes. In addition, agricultural runoff within the Illinois portion of the Mississippi River Basin contributes to the susceptibility of the Quincy intakes. With high flow rates and long distances of travel on the Mississippi River, critical areas can be extensive. The critical area for the Quincy intake was determined using data from a joint U.S. Environmental Protection Agency/U.S. Geological Survey project. This project used a computer modeling program (SPARROW) to determine travel times on major rivers in the United States. Accidental spills of hazardous materials into navigable waterways are a major concern because of their frequency in the United States in recent years. Illinois has access to 1,116 miles of inland waterway that can handle commercial barge traffic. These include the Upper Mississippi River, Illinois River Waterway, and the Ohio River. Along these waterways are numerous facilities that load and unload hazardous materials. Analysis of reported spills indicate that between 1974 and 1989, 794 accidental spills of hazardous materials occurred along Illinois waterways. Approximately 92% of these spills occurred along the Mississippi and/or the Illinois River. Figure 2 shows the critical area of concern (Zone 1) for the Quincy surface water intake. Spills occurring in this critical area will travel to the intake in five hours or less, making contingency planning and spill reporting a major concern in this watershed. Further information concerning spill response planning on the Mississippi River may be found in U.S. EPA’s website at www.epa.gov/region5/oil and at U.S. Geological Survey’s website ftp://ftp.umesc.er.usgs.gov/pub/gis_data/oil_spill.

 

 

 

2016 Regulated Contaminants Detected

 

Here are a few definitions and scientific terms which will help you understand the information in the contaminant detection tables.

 

AL

Action Level: The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

 

Avg

Regulatory compliance with some MCLs is based on running annual average of monthly samples.

 

MCL

Maximum Contaminant Level: The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the Maximum Contaminant Level Goal as feasible using the best available treatment technology.

 

MCLG

Maximum Contaminant Level Goal: The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

 

MRDL

Maximum Residual Disinfectant Level: The highest level of disinfectant allowed in drinking water.

 

MRDLG

Maximum Residual Disinfectant Level Goal: The level of disinfectant in drinking water below which there is no known or expected risk to health. MRDLGs allow for a margin of safety.

 

N/A

Not Applicable

 

NTU

Nephelometric Turbidity Units

 

pCi/L

picocuries per liter ( a measure of radioactivity)

 

ppb

Parts per billion or micrograms per liter (ug/L) - or one ounce in 7,350,000 gallons of water.

 

ppm

Parts per million or milligrams per liter (mg/L) - or one ounce in 7,350 gallons of water.

 

TT

Treatment Technique: A required process intended to reduce the level of a contaminant in drinking water.

 


Lead and Copper

 

 

Date Sampled

MCLG

Action Level (AL)

90th Percentile

# Sites Over AL

Units

Violation

Likely Source of Contamination

 

Copper

2016

1.3

1.3

1.2

2

ppm

No

Corrosion of household plumbing systems; erosion of natural deposits; leaching from wood preservatives

 

Lead

2016

0

15

2.7

0

ppb

No

Corrosion of household plumbing systems; erosion of natural deposits.

 

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children.  Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. Mill Creek Water District is responsible for providing high quality drinking water, but cannot control the variety of materials used in plumbing components.  When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking.  If you are concerned about lead in your water, you may wish to have your water tested.  Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.

 

Regulated Contaminants

 

Disinfectants & Disinfection Byproducts

Collection Date

Highest Level Detected

Range of Levels Detected

MCLG

MCL

Units

Violation

Likely Source of Contamination

Chlorine

12/31/2016

.6

0.47 – 0.61

MRDLG = 4

MRDL = 4

ppm

No

Water additive used to control microbes.

Haloacetic Acids (HAA5)

2016

2

2.4 – 2.4

No goal for total

60

ppb

No

By-product of drinking water disinfection.

Total Trihalomethanes (TTHM)

2016

10

9.68 – 9.68

No goal for the total

80

ppb

No

By-product of drinking water disinfection.

Note: Compliance for Disinfection Byproducts (HAA5 and TTHM) is measured based on the running annual average, i.e. the average of all samples taken within the 12-month period preceding the sample date. The   Highest Level Detected for Disinfection By products (HAA5 and TTHM) is the highest of the running annual averages for 2016, not the highest single measurement.

Inorganic Contaminants

 

 

 

 

 

 

 

Likely source of Contamination

Arsenic

04/22/2015

1.3

1.3 – 1.3

0

10

ppb

No

Erosion of natural deposits; Runoff from orchards; Runoff from glass and electronics production wastes.

Barium

04/22/2015

.13

0.13 - 13

2

2

ppm

No

Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.

Fluoride

2016

.79

.61 - .79

4

4.0

ppm

No

Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.

Manganese

04/22/2015

18

18 - 18

150

150

ppb

No

This contaminant is not currently regulated by the USEPA. However, the state regulates. Erosion of

natural deposits.

Nitrate [measured as nitrogen] – Nitrate in drinking water at levels above 10 ppm is a health risk for infants of less than six months of age. High nitrate levels in drinking water can cause blue baby syndrome. Nitrate levels may rise quickly for short periods of time because of rainfall or agricultural activity. If you are caring for an infant you should ask advice from your health care provider.

2016

9

2 – 8.9

10

10

ppm

No

Runoff from fertilizer use; Leaching from septic

tanks, sewage; Erosion of natural deposits.

Sodium

04/22/2015

15

15 - 15

 

 

ppm

No

Erosion from naturally occurring deposits: Used in water softener regeneration.

Zinc

04/22/2015

0.012

0.012 – 0.012

5

5

ppm

No

This contaminant is not currently regulated by the USEPA. However, the state regulates. Naturally occurring; discharge from metal

Radiological Contaminants

 

 

 

 

 

 

 

 

Combined Radium 226/228

04/19/2011

1.128

1.128 – 1.128

0

5

pCi/L

No

Erosion of natural deposits

Gross alpha excluding radon and uranium

09/15/2015

0.01

0.01 – 0.01

 

1.0

ppm

No

Erosion of natural deposits

Note:    The state requires monitoring of certain contaminants less than once per year because the concentrations of these contaminants do not change frequently. Therefore, some of this data may be more than one year old.

 

 

Violation Summary Table

We are happy to announce that NO monitoring, reporting, treatment technique, maximum residual disinfectant level, or maximum contaminant level violations were recorded during 2016.

 

 




Calendar Year 2016

Consumer Confidence Report

Quincy, Illinois

This year, as in years past, your tap water met all USEPA and state drinking water health standards. Our system vigilantly safeguards our water supply, and we are able to report that the department had NO violation of a contaminant level or of any other water quality standard in 2016. This report summarizes the quality of water that we provided last year, including details of where your water comes from, what it contains, and how it compares to standards set by regulatory agencies. We are committed to providing you with this information because informed customers are our best allies.

This report is intended to provide you with important information about your drinking water and the efforts made by the Department of Utilities to provide safe drinking water. This report includes drinking water facts and contaminants detected in your drinking water supply for the period of January 1 through December 31, 2016. Each year, we will provide you a new report. If you need help understanding this report or have general questions, please contact the person listed below.

Este informe contiene información muy importante sobre el agua que usted bebe. Tradúzcalo ó hable con alguien que lo entienda bien.

Contact Name:

 

Jeffrey Conte

Telephone Number:

(217) 228-4527

 

E-mail:

 

jconte@quincyil.gov

 

We want our valued customers to be informed about their water quality. If you would like to learn more, please feel welcome to attend any of our regularly scheduled Utilities Committee meetings. Utilities Committee meetings are held the first Thursday of each month at 4:00 PM in City Hall (730 Maine Street, Quincy, Illinois). Before we begin listing our unique water quality characteristics, here are some important facts you should know to help have a basic understanding of drinking water in general.

Sources of Drinking Water

Quincy's water comes from the Mississippi River, which is a surface water. Illinois EPA considers all surface water sources of community water supply to be susceptible to potential pollution problems, hence, the reason for mandatory treatment for all surface water supplies in Illinois. Mandatory treatment includes coagulation, sedimentation, filtration, and disinfection. Within the Illinois portion of the Mississippi River Watershed, many commodities, including manufactured goods, petrochemicals, and pesticides are transported along the river system. The production, storage, and transportation of these commodities are a major concern, especially when occurring near surface water intakes. In addition, agricultural runoff within the Illinois portion of the Mississippi River Basin contributes to the susceptibility of the Quincy intakes. With high flow rates and long distances of travel on the Mississippi River, critical areas can be extensive. The critical area for the Quincy intake was determined using data from a joint U.S. Environmental Protection Agency/U.S. Geological Survey project. This project used a computer modeling program (SPARROW) to determine travel times on major rivers in the United States. Accidental spills of hazardous materials into navigable waterways are a major concern because of their frequency in the United States in recent years. Illinois has access to 1,116 miles of inland waterway that can handle commercial barge traffic. These include the Upper Mississippi River, Illinois River Waterway, and the Ohio River. Along these waterways are numerous facilities that load and unload hazardous materials. Analysis of reported spills indicate that between 1974 and 1989, 794 accidental spills of hazardous materials occurred along Illinois waterways. Approximately 92% of these spills occurred along the Mississippi and/or the Illinois River. Figure 2 shows the critical area of concern (Zone 1) for the Quincy surface water intake. Spills occurring in this critical area will travel to the intake in five hours or less, making contingency planning and spill reporting a major concern in this watershed. Further information concerning spill response planning on the Mississippi River may be found in U.S. EPA's website at www.epa.gov/region5/oil and at U.S. Geological Survey's website ftp://ftp.umesc.er.usgs.gov/pub/gis_data/oil_spill.

The source water assessment for our supply has been completed by the Illinois EPA. If you would like a copy of this information, please call the Department of Utilities. To view a summary version of the completed Source Water Assessments, including: Importance of Source Water; Susceptibility to Contamination Determination; and documentation/recommendation of Source Water Protection Efforts, you may access the Illinois EPA website at: http://www.epa.state.il.us/cgi-bin/wp/swap-fact-sheets.pl.

Page 1 of 5

Calendar Year 2016

Consumer Confidence Report

Quincy, Illinois

Other Facts about Drinking Water

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the USEPA's Safe Drinking Water Hotline (1-800-426-4791).

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. USEPA/CDC guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the USEPA's Safe Drinking Water Hotline (1-800-426-4791).

The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally-occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in the source water include:

  • Microbial contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations and wildlife.

  • Inorganic contaminants, such as salts and metals, which can be naturally occurring or result from urban storm water runoff, industrial, or domestic wastewater discharges, oil and gas production, mining, or farming.

  • Pesticides and herbicides, which may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses.

  • Organic chemical contaminants, including synthetic and volatile organic chemicals, which are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff, and septic systems.

  • Radioactive contaminants, which can be naturally-occurring or be the result of oil and gas production and mining activities.

    In order to ensure that tap water is safe to drink, EPA prescribes regulations which limit the amount of certain contaminants in water provided by public water systems. FDA regulations establish limits for contaminants in bottled water which must provide the same protection for public health.

    If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. We cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.

  • Page 2 of 5

    Calendar Year 2016

    Consumer Confidence Report

    Quincy, Illinois

    2016 Regulated Contaminants Detected

    The next several tables summarize contaminants detected in your drinking water supply. Here are a few definitions and scientific terms which will help you understand the information in the contaminant detection tables.

    Action Level (AL)

    The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system

     

    must follow.

     

     

    Action Level Goal (ALG)

    The level of a contaminant in drinking water below which there is no known or expected risk to health. ALGs allow for a

     

    margin of safety.

     

     

    Avg

    Regulatory compliance with some MCLs is based on running annual average of monthly samples.

     

     

    Level 1 Assessment

    A Level 1 assessment is a study of the water system to identify potential problems and determine (if possible) why total

     

    coliform bacteria have been found in our water system.

     

     

    Level 2 Assessment

    A Level 2 assessment is a very detailed study of the water system to identify potential problems and determine (if

     

    possible) why an E. coli MCL violation has occurred and/or why total coliform bacteria have been found in our water

     

    system on multiple occasions.

     

     

    Maximum Contaminant Level (MCL)

    The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the Maximum Contaminant

     

    Level Goal as feasible using the best available treatment technology.

     

     

    Maximum Contaminant Level Goal (MCLG)

    The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a

     

    margin of safety.

     

     

    Maximum Residual Disinfectant Level (MRDL)

    The highest level of disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is

     

    necessary for control of microbial contaminants.

     

     

    Maximum Residual Disinfectant Level Goal (MRDLG)

    The level of disinfectant in drinking water below which there is no known or expected risk to health. MRDLGs do not

     

    reflect the benefits of the use of disinfectants to control microbial contaminants.

     

     

    N/A

    Not Applicable

     

     

    NTU

    Nephelometric Turbidity Units

     

     

    pCi/L

    picocuries per liter ( a measure of radioactivity)

     

     

    ppb

    parts per billion or micrograms per liter (ug/L) - or one ounce in 7,350,000 gallons of water.

     

     

    ppm

    parts per million or milligrams per liter (mg/L) - or one ounce in 7,350 gallons of water.

     

     

    Treatment Technique or TT

    A required process intended to reduce the level of a contaminant in drinking water.

     

     

    Page 3 of 5

    Calendar Year 2016

    Consumer Confidence Report

    Quincy, Illinois

     

    Lead and Copper

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Date Sampled

     

     

    MCLG

     

    Action Level

     

     

     

    90th

     

     

    # Sites Over

     

     

    Units

    Violation

     

    Likely Source of Contamination

     

     

     

     

     

     

     

     

    (AL)

     

     

     

    Percentile

     

     

     

     

    AL

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Corrosion of household plumbing systems;

     

    Copper

     

    06/28/14

     

    1.3

    1.3

     

    0.062

     

     

     

    0

     

     

    ppm

    No

     

    erosion of natural deposits; leaching from wood

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    preservatives

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Lead

     

    06/28/14

     

    0

    15

     

    1.3

     

     

     

    0

     

     

    ppb

    No

     

    Corrosion of household plumbing systems;

     

     

     

     

     

     

     

     

     

     

    erosion of natural deposits.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Regulated Contaminants

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Disinfectants & Disinfection

     

    Collection

     

    Highest Level

     

     

    Range of Levels

     

    MCLG

    MCL

    Units

    Violation

    Likely Source of Contamination

     

    Byproducts

     

    Date

     

    Detected

     

     

    Detected

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Chloramines

     

    12/31/16

     

    2.4

     

     

     

    2- 3

     

     

    MRDLG =

    MRDL =

    ppm

     

    No

    Water additive used to control microbes.

     

     

     

     

     

     

     

     

    4

     

     

    4

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    No goal

     

     

     

     

     

     

     

    Haloaecetic acids (HAA5)

     

    2016

     

    38

     

     

     

    2.3 - 72.7

     

     

    60

    ppb

     

    No

    By-product of water disinfection.

     

     

     

     

     

     

     

     

    for total

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Total Trihalomethanes (TTHM)

     

    2016

     

    53

     

     

     

    36 - 74.7

     

     

    No goal

    80

    ppb

     

    No

    By-product of water disinfection

     

     

     

     

     

     

     

     

    for total

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Note:

    Compliance for Disinfection Byproducts (HAA5 and TTHM) is measured based on the running annual average, i.e. the average of all samples taken within the 12-month

     

     

    period preceding the sample date. The Highest Level Detected for Disinfection Byproducts (HAA5 and TTHM) is the highest of the running annual averages for 2016, not

     

     

    the highest single measurement.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Inorganic Contaminants

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Discharge of drilling wastes; Discharge

     

    Barium

     

     

     

     

    2016

     

    0.014

     

     

     

    0.014 - 0.014

     

    2

     

     

    2

    ppm

     

    No

    from metal refineries; Erosion of natural

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    deposits

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Erosion of natural deposits; Water additive

     

    Fluoride

     

     

     

     

    2016

     

    0.6

     

     

     

    0.633 - 0.633

     

    4

     

     

    4.0

    ppm

     

    No

    which promotes strong teeth; Discharge

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    from fertilizer and aluminum factories.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Runoff from fertilizer use; Leaching from

     

    Nitrate (measured as Nitrogen)

     

    2016

     

    4

     

     

     

    3.8 - 3.8

     

     

    10

     

     

    10

    ppm

     

    No

    septic tanks, sewage; Erosion of natural

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    deposits/silver1

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Sodium

     

     

     

     

    2016

     

    11

     

     

     

    11 - 11

     

     

     

     

     

     

    ppm

     

    No

    Erosion from naturally occurring deposits;

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Used in water softener regeneration.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Page 4 of 5

     

    Calendar Year 2016

     

     

     

     

     

     

    Consumer Confidence Report

     

     

     

     

    Quincy, Illinois

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Radiological Contaminants

     

    Collection

     

    Highest Level

     

     

    Range of Levels

     

    MCLG

     

    MCL

    Units

     

    Violation

    Likely Source of Contamination

     

     

     

     

    Date

     

     

    Detected

     

     

    Detected

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Combined Radium 226/228

     

    04/19/11

     

    1.128

     

     

    1.128 - 1.128

     

    0

     

    5

     

    pCi/L

     

    No

    Erosion of natural deposits.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Gross alpha excluding radon

     

     

    09/15/15

     

    1.67

     

     

    1.67 - 1.67

     

    0

     

    15

     

    pCi/L

     

    No

    Erosion of natural deposits.

     

     

    and uranium

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    State Regulated Contaminants

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    This contaminant is not currently regulated

     

     

     

    Iron

     

     

     

    2016

     

    0.01

     

     

    0.01 - 0.01

     

     

     

    1.0

     

    ppm

     

    No

    by the USEPA. However, the state regulates

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    it. Erosion of natural deposits.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Note:

    The state requires monitoring of certain contaminants less than once per year because the concentrations of these contaminants do not change frequently. Therefore,

     

     

     

     

    some of this data may be more than one year old.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Turbidity

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Limit

     

     

    Level Detected

     

    Violation

     

    Likely Source of Contamination

     

     

     

     

     

     

     

     

     

     

    (Treatment Technique)

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Lowest Monthly % Meeting Limit

     

     

     

    0.3 NTU

     

    100%

     

     

     

     

    No

     

    Soil Runoff

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    Highest Single Measurement

     

     

     

     

    1 NTU

     

     

    0.3 NTU

     

     

     

    No

     

    Soil Runoff

     

     

     

     

     

     

     

     

     

     

     

     

    Note:

    Turbidity is a measurement of the cloudiness of the water caused by suspended particles. We monitor it because it is a good indicator of water quality and the

     

     

     

    effectiveness of our filtration system and disinfectants.

     

     

     

     

     

     

     

     

     

     

     

     

     

    Total Organic Carbon

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    The percentage of Total Organic Carbon (TOC) removal was measured each month and the system met all TOC removal requirements set by IEPA.

    Cryptosporidium

    Cryptosporidium is a microbial parasite found in surface water throughout the United State. Although filtration removes cryptosporidium, the most commonly used filtration methods cannot guarantee 100 percent removal. Treatment processes have been optimized to maintain low turbidity and remove particles from water to greatly reduce the threat of cryptosporidium cysts getting through the treatment process and into the drinking water system. In 2016, monitoring of the untreated source water indicated the presence of this organism. A level of 0.2 oocysts per liter was detected in one of three untreated source water samples collected and analyzed in 2016. In the remaining two source water samples analyzed in 2016, no cryptosporidium organisms were detected. Current test methods do not enable us to determine if the organisms that were detected in the untreated source water sample were dead or if they were capable of causing disease. Symptoms of cryptosporidium infection (cryptosporidiosis) include nausea, diarrhea, and abdominal cramps. Most healthy individuals can overcome the disease within a few weeks. However, immuno-compromised people are at greater risk of developing life-threatening illness. Immuno-compromised individuals are encouraged to consult their doctors regarding appropriate precautions to avoid infection. Cryptosporidium must be ingested to cause disease and it may be spread through means other than drinking water, such as poor sanitation practices.

    Page 5 of 5



    MILL CREEK WATER DISTRICT    •    6415 Hickory Grove N    •    Quincy, IL 62305

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