Community Water System · PWS IL0630100

Carbon Hill

Carbon Hill, Illinois 60416 - drinking water served from groundwater sources to 370 people, tracked in EPA SDWIS and UCMR5.

Compiled by PlainWater Editorial, Drinking Water Quality Editorial Team · May 15, 2026

370
People served: 1,635
EPA violations: 120
Health-based: Untested
UCMR5 result

The verdict

EPA records 1,635 drinking-water violations at Carbon Hill, 7% of them health-based - above the Illinois per-system average.

1,635
Total EPA violations on record: 7%
Health-based (MCL / treatment failure): 370
People served by this system: N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Carbon Hill

Carbon Hill is a local-owned community water system that delivers drinking water to 370 residents in Carbon Hill, Illinois (Grundy County) through 155 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,635 total violations for this system , of which 120 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,486 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 142 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%).

Carbon Hill's 1,635 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

370

Total Violations

1,635

Health-Based Violations

120

Water Source

Groundwater

System Details

System Type: Community
Owner Type: Local
Connections: 155
County: Grundy
School/Daycare: No
MCL Violations: 120
Monitoring Violations: 1,486
Treatment Tech Violations: 0

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
Coliform (TCR)	MR	142	2008
Combined Radium (-226 and -228)	MCL	63	2003
Gross Alpha, Excl. Radon and U	MCL	55	2002
Xylenes, Total	MR	31	1998
Toxaphene	MR	31	2001
Carbofuran	MR	31	2001
Heptachlor epoxide	MR	31	2001
2,4,5-TP	MR	31	2001
ETHYLENE DIBROMIDE	MR	31	2001
Chlordane	MR	31	2001
BHC-GAMMA	MR	31	2001
Methoxychlor	MR	31	2001
Atrazine	MR	31	2001
LASSO	MR	31	2001
Heptachlor	MR	31	2001
2,4-D	MR	31	2001
Total Polychlorinated Biphenyls (PCB)	MR	31	2001
1,2-DIBROMO-3-CHLOROPROPANE	MR	31	2001
Pentachlorophenol	MR	31	2001
p-Dichlorobenzene	MR	27	1998
trans-1,2-Dichloroethylene	MR	27	1998
1,2-Dichloroethane	MR	27	1998
1,1,1-Trichloroethane	MR	27	1998
Carbon tetrachloride	MR	27	1998
Tetrachloroethylene	MR	27	1998
CHLOROBENZENE	MR	27	1998
Benzene	MR	27	1998
Toluene	MR	27	1998
o-Dichlorobenzene	MR	27	1998
Ethylbenzene	MR	27	1998

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 Carbon Hill.

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 IL0630100 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 Carbon Hill 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	Consumer Confidence Rule	Other	8	SDWIS / IL0630100 / 7000
2008	Coliform (TCR)	MR	142	SDWIS / IL0630100 / 3100
2008	Chlorine	MR	12	SDWIS / IL0630100 / 0999
2003	Combined Radium (-226 and -228)	MCL	63	SDWIS / IL0630100 / 4010
2002	Gross Alpha, Excl. Radon and U	MCL	55	SDWIS / IL0630100 / 4000
2001	Toxaphene	MR	31	SDWIS / IL0630100 / 2020
2001	Carbofuran	MR	31	SDWIS / IL0630100 / 2046
2001	Heptachlor epoxide	MR	31	SDWIS / IL0630100 / 2067
2001	2,4,5-TP	MR	31	SDWIS / IL0630100 / 2110
2001	ETHYLENE DIBROMIDE	MR	31	SDWIS / IL0630100 / 2946
2001	Chlordane	MR	31	SDWIS / IL0630100 / 2959
2001	BHC-GAMMA	MR	31	SDWIS / IL0630100 / 2010
2001	Methoxychlor	MR	31	SDWIS / IL0630100 / 2015
2001	Atrazine	MR	31	SDWIS / IL0630100 / 2050
2001	LASSO	MR	31	SDWIS / IL0630100 / 2051

How Carbon Hill Compares

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

Metric	Carbon Hill	Illinois avg	Federal benchmark
Total violations	1,635	69.4	SDWA compliance, any non-zero count is a recorded breach
Health-based violations	120	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	370	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 Carbon Hill water safe to drink? ▼

Carbon Hill (PWS ID: IL0630100) has 1635 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 370 people using Groundwater sources.

How many people does Carbon Hill serve? ▼

Carbon Hill serves 370 people in Carbon Hill, Illinois. It is a Local-owned system using Groundwater water sources with 155 service connections.

What type of violations does Carbon Hill have? ▼

Carbon Hill has 1,635 total violations: 120 health-based violations (MCL exceedances or treatment failures), 1,486 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in Carbon Hill water? ▼

No PFAS testing data is available for Carbon Hill under the EPA's UCMR5 monitoring program.

What water source does Carbon Hill use? ▼

Carbon Hill 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.