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Community Water System · PWS IL1650050

Carrier Mills

Carrier Mills, Illinois 62917 - drinking water served from groundwater sources to 2,085 people, tracked in EPA SDWIS and UCMR5.

2,085
People served
82
EPA violations
16
Health-based
Untested
UCMR5 result

The verdict

EPA records 82 drinking-water violations at Carrier Mills, 20% of them health-based - above the Illinois per-system average.

82
Total EPA violations on record
20%
Health-based (MCL / treatment failure)
2,085
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Carrier Mills

Carrier Mills is a local-owned community water system that delivers drinking water to 2,085 residents in Carrier Mills, Illinois (Saline County) through 875 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 82 total violations for this system , of which 16 (20%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 56 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 18 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Illinois, EPA tracks 5,117 public water systems serving 12,576,876 people, with 355,322 cumulative violations and 52,932 health-based violations on record. About 81% of systems in the state carry at least one violation, and state-wide the average per system is 69.4 violations. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Carrier Mills's 82 violations sit above the Illinois average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
2,085
Total Violations
82
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
875
County
Saline
School/Daycare
No
MCL Violations
0
Monitoring Violations
56
Treatment Tech Violations
16

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 18 2012
Surface Water Treatment Rule TT 16 1993
Surface Water Treatment Rule MR 9 1993
Chlorine MR 8 2013
Lead and Copper Rule MR 4 2022
Total Haloacetic Acids (HAA5) MR 4 2023
TTHM MR 4 2023
Gross Alpha, Excl. Radon and U MR 1 1977
Fluoride MR 1 1979
Chromium MR 1 1979
Arsenic MR 1 1979
Cadmium MR 1 1979
Mercury MR 1 1979
Selenium MR 1 1979
Barium MR 1 1979
Nitrate MR 1 1979

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Carrier Mills.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID IL1650050 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Illinois Drinking Water Authority

Illinois EPA, Bureau of Water is the primacy agency that licenses and inspects Carrier Mills under EPA-delegated authority.

Open IL regulator portal

Source: Illinois EPA, Bureau of Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Total Haloacetic Acids (HAA5) MR 4 SDWIS / IL1650050 / 2456
2023 TTHM MR 4 SDWIS / IL1650050 / 2950
2022 Lead and Copper Rule MR 4 SDWIS / IL1650050 / 5000
2013 Chlorine MR 8 SDWIS / IL1650050 / 0999
2012 Coliform (TCR) MR 18 SDWIS / IL1650050 / 3100
1993 Surface Water Treatment Rule TT 16 SDWIS / IL1650050 / 0200
1993 Surface Water Treatment Rule MR 9 SDWIS / IL1650050 / 0200
1979 Fluoride MR 1 SDWIS / IL1650050 / 1025
1979 Chromium MR 1 SDWIS / IL1650050 / 1020
1979 Arsenic MR 1 SDWIS / IL1650050 / 1005
1979 Cadmium MR 1 SDWIS / IL1650050 / 1015
1979 Mercury MR 1 SDWIS / IL1650050 / 1035
1979 Selenium MR 1 SDWIS / IL1650050 / 1045
1979 Barium MR 1 SDWIS / IL1650050 / 1010
1979 Nitrate MR 1 SDWIS / IL1650050 / 1040

How Carrier Mills Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Carrier Mills Illinois avg Federal benchmark
Total violations 82 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 16 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,085 2,458 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,117 regulated public water systems in Illinois.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Carrier Mills water safe to drink? ▼
Carrier Mills (PWS ID: IL1650050) has 82 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,085 people using Groundwater sources.
How many people does Carrier Mills serve? ▼
Carrier Mills serves 2,085 people in Carrier Mills, Illinois. It is a Local-owned system using Groundwater water sources with 875 service connections.
What type of violations does Carrier Mills have? ▼
Carrier Mills has 82 total violations: 16 health-based violations (MCL exceedances or treatment failures), 56 monitoring/reporting violations, and 16 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Carrier Mills water? ▼
No PFAS testing data is available for Carrier Mills under the EPA's UCMR5 monitoring program.
What water source does Carrier Mills use? ▼
Carrier Mills uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.