2023 Consumer Confidence Report
Source of Drinking Water:
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.
- 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 a by-product of industrial processes and petroleum production, and can also come from gas stations, urban storm runoff, and septic systems.
- Radioactive contaminants, which can be naturally occurring or be the result of oil and gas production and mining activities.
Drinking water, including bottled water, may reasonably be expected to contain a 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 at (800) 426-4791.
In order to ensure that tap water is safe to drink, the 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 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 (800-426-4791).
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 Village Hall or call our water operator at 815-624-2800. 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 Water Assessment:
- The source of drinking water used by Rockton IL is Ground Water
- Active Well #5 (11665) Kocher Street 650 GPM SUBMERSIBLE
- Active Well #6 (11666) 12527 Wagon Wheel Rd. 650 GPM VERTICAL LINE SHAFT
- Active Well #7 (00796) 1 Mack Trail NW ¼ SEC 19 TWP 46 RNG 12E 1000 GPM VERTICAL LINE SHAFT
- Active Well #9 (01789) 1 Mack Trail NW ¼ SEC 19 TWP 46 RNG 12E 800 GPM SUBMERSIBLE
- Active Well #10 (01981) 12801 Old River Rd. 900 GPM SUBMERSIBLE
Based on information obtained in a Well Site Survey published in 1990 by the Illinois EPA, several potential sources are located within 1,000 feet of the wells. During the survey of Rockton’s source water protection area, Illinois EPA staff recorded one potential source, route, or possible site within the 1,000-foot minimum setback zone of well #5. The Illinois EPA considers the source water of this facility at well #5 to be susceptible to contamination. The source water from wells #6 and #7 are not considered susceptible to contamination by the Illinois EPA. This determination is based on several criteria including monitoring conducted at the wells, monitoring conducted at the entry point to the distribution system, and the available hydrogeologic data on the wells.
Water Quality Test Results:
The following tables contain scientific terms and measures, some that may require explanation:
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.
Treatment Technique or TT: A required process intended to reduce the level of a contaminant in drinking water.
Maximum Contaminant Level or MCL: The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Maximum Contaminant Level Goal or MCLG: The level of a contaminant in drinking water below which there is no know or expected risk to health. MCLG’s allow for a margin of safety.
mg/L or ppm: milligrams per liter or parts per million – or one ounce in 7,350 gallons of water.
ug/L or ppb: micrograms per liter or parts per billion – or one ounce in 7,350,000 gallons of water.
ng/L or ppt: nanograms per liter or parts per trillion – or one ounce in 7,350,000,000 gallons of water.
pCi/L: Picocuries per liter - A unit of radioactivity corresponding to one decay every 27 seconds in a volume of one liter.
Avg: Regulatory compliance with some MCL’s are based on running annual average of monthly samples.
NA: Not applicable.
Maximum residual disinfectant level or MRDL: The highest level of a 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 or MRDLG: The level of a drinking water disinfectant 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.
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.
Action Level (AL): The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.
2023 Regulated Contaminates Detected
Lead and Copper |
Date Sampled |
MCLG |
Action Level (AL) |
90th Percentile |
# Sites Over AL |
Units |
Violations |
Likely Source of Contamination |
Copper |
2023 |
1.3 |
1.3 |
1.1 |
3 |
ppm |
N |
Erosion of natural deposits, Leaching from wood preservatives, Corrosion of household plumbing systems. |
Lead |
2023 |
0 |
15 |
5.7 |
1 |
ppb |
N |
Erosion of natural deposits, Leaching from wood preservatives, Corrosion of household plumbing systems. |
Disinfectant & Disinfection By-products |
Collection Date |
Highest Level Detected |
Range of Levels Detected |
MCLG |
MCL |
Units |
Violations |
Likely Source of Contamination |
Chlorine |
2023 |
1.2 |
1.0-1.2 |
MRDLG=4 |
MRDL=4 |
ppm |
N |
Water additive used to control microbes |
Total Trihalomethanes (TTHM) |
2023 |
9.7 |
9.7-9.7 |
n/a |
80 |
ppb |
N |
By-product of drinking water chlorination |
Haloacetic Acid (HAA5) |
2023 |
2.7 |
2.7-2.7 |
n/a |
60 |
Ppb |
N |
By-product of drinking water chlorination |
Inorganic Contaminates |
Collection |
Highest Level |
Range of Levels |
MCLG |
MCL |
Units |
Violations |
Likely Source of Contamination |
Nitrate (Measured as Nitrogen) |
2023 |
2.6 |
0 – 2.6 |
10 |
10 |
ppm |
N |
Runoff from fertilizer use; Leaching from septic tanks, Sewage; Erosion of natural deposits. |
Barium |
2023 |
.051 |
.051-.051 |
2 |
2 |
ppm |
N |
Discharge of drilling waste, Discharge from metal refineries, Erosion of natural deposits. |
Fluoride |
2023 |
0.517 |
0.517-0.517 |
4 |
4 |
ppm |
N |
Erosion of natural deposits; Water additive which promotes strong teeth, Discharge from fertilizer and aluminum factories. |
Iron |
2023 |
0.061 |
0 – 0.061 |
n/a |
1 |
ppm |
N |
This contaminant is not currently regulated by the USEPA. However, the state regulates. Erosion of natural deposits. |
Sodium |
2023 |
8.7 |
8.7-8.7 |
n/a |
n/a |
ppm |
N |
Erosion from naturally occurring deposits. Used in water softener regeneration. |
Zinc |
2023 |
0.0064 |
0 – 0.0064 |
5 |
5 |
ppm |
N |
This contaminant is not currently regulated by the USEPA. The state regulates naturally occurring discharge from metal. |
Arsenic |
2023 |
1.2 |
1.2-1.2 |
0 |
10 |
ppb |
N |
Erosion of natural deposits, Runoff from orchards, runoff from glass and electronics production wastes. |
Manganese |
2023 |
61 |
61-61 |
150 |
150 |
ppb |
N |
This contaminant is not currently regulated by the USEPA. However, the state regulates. Erosion of natural deposits. |
Radioactive Contaminates |
Collection Date |
Highest Level Detected |
Range of Levels Detected |
MCLG |
MCL |
Units |
Violations |
Likely Source of Contamination |
Combined Radium 226/228 |
2023 |
4.2 |
0-4.2 |
0 |
5 |
pCi/L |
N |
Erosion of natural deposits |
Gross Alpha excluding radon and uranium |
2023 |
2.54 |
0-2.54 |
0 |
15 |
pCi/L |
N |
Erosion of natural deposits |
2023 PFAS Testing
In 2023, Our PWS was sampled as a part of the State of Illinois PFAS Statewide Investigation. Results from this sampling indicated PFAS were detected in our drinking water below the health advisory level established by Illinois EPA. Follow up monitoring is being conducted. For more information about PFAS health advisories please visit https://epa.illinois.gov/topics/water-quality/pfas/pfas-healthadvisory.html
PFAS Analyte (Acronym) |
Health-Based Guidance Level (ng/L) |
Sample Results (ng/L) |
Perfluorobutanesulfonic acid (PFBS) |
2,100 ng/L |
2.6 ng/L |
Perfluorohexanesulfonic acid (PFHxS) |
140 ng/L |
12 ng/L |
Perfluorooctanoic acid (PFOA) |
2 ng/L |
Not Detected |
Perfluorohexanoic acid (PFHxA) |
560,000 ng/L |
Not Detected |
Perfluorononanoic acid (PFNA) |
21 ng/L |
Not Detected |
Perfluoroctanesulfonic acid (PFOS) |
14 ng/L |
4.3 ng/L |
2023 Violations
The Village of Rockton Water Department is required to notify you of any drinking water violations made in 2023
Lead and Copper Rule |
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The Lead and Copper Rule protects public health by minimizing lead and copper levels in drinking water, primarily by reducing water corrosivity. Lead and copper enter drinking water mainly from corrosion of lead and copper containing plumbing materials. |
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Violation Type |
Violation Begin |
Violation End |
Description |
OCCT/SOWT RECOMMENDATION/STUDY(LCR) |
04/02/2023 |
05/19/2023 |
We failed to propose treatment to our regulator in response to results that indicate our water needs treatment to reduce lead and/or copper levels. |
Corrective Action Taken |
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Submitted proposed treatment to our regulator in response to results that indicate our water needs treatment to reduce lead and/or copper levels |