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Community Water System · PWS IL1170150

Carlinville

Carlinville, Illinois 62626 - drinking water served from surface water sources to 6,598 people, tracked in EPA SDWIS and UCMR5.

6,598
People served
243
EPA violations
167
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 243 drinking-water violations at Carlinville, 69% of them health-based - above the Illinois per-system average.

243
Total EPA violations on record
69%
Health-based (MCL / treatment failure)
6,598
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Carlinville

Carlinville is a local-owned community water system that delivers drinking water to 6,598 residents in Carlinville, Illinois (Macoupin County) through 2,880 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 243 total violations for this system , of which 167 (69%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 40 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 CARBON, TOTAL, recorded in 114 violations (TT, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Carlinville's 243 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
6,598
Total Violations
243
Health-Based Violations
167
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,880
County
Macoupin
School/Daycare
No
MCL Violations
25
Monitoring Violations
40
Treatment Tech Violations
138

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL TT 114 2012
Interim Enhanced Surface Water Treatment Rule TT 24 2015
Chlorite MR 14 2023
Atrazine MCL 9 1996
Public Notice Other 8 2007
Coliform (TCR) MR 6 2006
CARBON, TOTAL MR 6 2006
Chlorite MCL 6 2014
Total Haloacetic Acids (HAA5) MCL 5 2006
Coliform (TCR) MCL 5 2009
Chlorine MR 5 2006
Chlorine dioxide MRDL 4 2011
Cadmium MR 1 1979
Chromium MR 1 1979
Mercury MR 1 1979
Nitrate MR 1 1979
Barium MR 1 1979
Arsenic MR 1 1979
Fluoride MR 1 1979
Selenium MR 1 1979
Gross Alpha, Excl. Radon and U MR 1 1977

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFTrDA 7/7/2025 <7.00 ppt 7.00 ppt Not Detected
PFOS 7/7/2025 <4.00 ppt 4.00 ppt Not Detected
PFDoA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/7/2025 <4.00 ppt 4.00 ppt Not Detected
ADONA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 7/7/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFBS 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 7/7/2025 <5.00 ppt 5.00 ppt Not Detected
PFTA 7/7/2025 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 7/7/2025 <6.00 ppt 6.00 ppt Not Detected
PFUnA 7/7/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 7/7/2025 <5.00 ppt 5.00 ppt Not Detected
PFHpS 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/7/2025 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/7/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 7/7/2025 <2.00 ppt 2.00 ppt Not Detected
PFMPA 7/7/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 7/7/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 7/7/2025 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/7/2025 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/7/2025 <5.00 ppt 5.00 ppt Not Detected
PFPeA 7/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 4/7/2025 <7.00 ppt 7.00 ppt Not Detected
PFOS 4/7/2025 <4.00 ppt 4.00 ppt Not Detected
PFNA 4/7/2025 <4.00 ppt 4.00 ppt Not Detected
PFHxS 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/7/2025 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/7/2025 <5.00 ppt 5.00 ppt Not Detected
PFBS 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 4/7/2025 <5.00 ppt 5.00 ppt Not Detected
PFTA 4/7/2025 <8.00 ppt 8.00 ppt Not Detected
PFOA 4/7/2025 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 4/7/2025 <6.00 ppt 6.00 ppt Not Detected
PFPeS 4/7/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpS 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFDA 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
NFDHA 4/7/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 4/7/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/7/2025 <3.00 ppt 3.00 ppt Not Detected

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 Carlinville.

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 IL1170150 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 Carlinville 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 Chlorite MR 14 SDWIS / IL1170150 / 1009
2015 Interim Enhanced Surface Water Treatment Rule TT 24 SDWIS / IL1170150 / 0300
2014 Chlorite MCL 6 SDWIS / IL1170150 / 1009
2012 CARBON, TOTAL TT 114 SDWIS / IL1170150 / 2920
2011 Chlorine dioxide MRDL 4 SDWIS / IL1170150 / 1008
2009 Coliform (TCR) MCL 5 SDWIS / IL1170150 / 3100
2007 Public Notice Other 8 SDWIS / IL1170150 / 7500
2006 Coliform (TCR) MR 6 SDWIS / IL1170150 / 3100
2006 CARBON, TOTAL MR 6 SDWIS / IL1170150 / 2920
2006 Total Haloacetic Acids (HAA5) MCL 5 SDWIS / IL1170150 / 2456
2006 Chlorine MR 5 SDWIS / IL1170150 / 0999
1996 Atrazine MCL 9 SDWIS / IL1170150 / 2050
1979 Cadmium MR 1 SDWIS / IL1170150 / 1015
1979 Chromium MR 1 SDWIS / IL1170150 / 1020
1979 Mercury MR 1 SDWIS / IL1170150 / 1035

How Carlinville Compares

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

Metric Carlinville Illinois avg Federal benchmark
Total violations 243 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 167 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 6,598 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 Carlinville water safe to drink?
Carlinville (PWS ID: IL1170150) has 243 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 6,598 people using Surface Water sources.
How many people does Carlinville serve?
Carlinville serves 6,598 people in Carlinville, Illinois. It is a Local-owned system using Surface Water water sources with 2,880 service connections.
What type of violations does Carlinville have?
Carlinville has 243 total violations: 167 health-based violations (MCL exceedances or treatment failures), 40 monitoring/reporting violations, and 138 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Carlinville water?
No. Carlinville was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Carlinville use?
Carlinville uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.