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Community Water System · PWS IL0995840

Sheridan Correctional Center

Sheridan, Illinois 60551 - drinking water served from groundwater sources to 1,670 people, tracked in EPA SDWIS and UCMR5.

1,670
People served
124
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 124 drinking-water violations at Sheridan Correctional Center - above the Illinois per-system average.

124
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
1,670
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sheridan Correctional Center

Sheridan Correctional Center is a state-owned community water system that delivers drinking water to 1,670 residents in Sheridan, Illinois (LaSalle County) through 44 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 124 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 117 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Xylenes, Total, recorded in 6 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%).

Sheridan Correctional Center's 124 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
1,670
Total Violations
124
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
State
Connections
44
County
LaSalle
School/Daycare
No
MCL Violations
0
Monitoring Violations
117
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Xylenes, Total MR 6 1992
p-Dichlorobenzene MR 6 1992
trans-1,2-Dichloroethylene MR 6 1992
1,1,1-Trichloroethane MR 6 1992
Carbon tetrachloride MR 6 1992
1,2-Dichloropropane MR 6 1992
Tetrachloroethylene MR 6 1992
CHLOROBENZENE MR 6 1992
Toluene MR 6 1992
Ethylbenzene MR 6 1992
Styrene MR 6 1992
Trichloroethylene MR 6 1992
cis-1,2-Dichloroethylene MR 6 1992
1,2-Dichloroethane MR 6 1992
o-Dichlorobenzene MR 6 1992
Benzene MR 6 1992
1,1-Dichloroethylene MR 6 1992
Coliform (TCR) MR 4 2013
Chlorine MR 4 2013
Total Haloacetic Acids (HAA5) MR 4 2018
Consumer Confidence Rule Other 3 2025
Lead and Copper Rule MR 2 1993
Gross Alpha, Excl. Radon and U MR 1 1977

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 Sheridan Correctional Center.

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 IL0995840 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 Sheridan Correctional Center 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
2025 Consumer Confidence Rule Other 3 SDWIS / IL0995840 / 7000
2018 Total Haloacetic Acids (HAA5) MR 4 SDWIS / IL0995840 / 2456
2013 Coliform (TCR) MR 4 SDWIS / IL0995840 / 3100
2013 Chlorine MR 4 SDWIS / IL0995840 / 0999
1993 Lead and Copper Rule MR 2 SDWIS / IL0995840 / 5000
1992 Xylenes, Total MR 6 SDWIS / IL0995840 / 2955
1992 p-Dichlorobenzene MR 6 SDWIS / IL0995840 / 2969
1992 trans-1,2-Dichloroethylene MR 6 SDWIS / IL0995840 / 2979
1992 1,1,1-Trichloroethane MR 6 SDWIS / IL0995840 / 2981
1992 Carbon tetrachloride MR 6 SDWIS / IL0995840 / 2982
1992 1,2-Dichloropropane MR 6 SDWIS / IL0995840 / 2983
1992 Tetrachloroethylene MR 6 SDWIS / IL0995840 / 2987
1992 CHLOROBENZENE MR 6 SDWIS / IL0995840 / 2989
1992 Toluene MR 6 SDWIS / IL0995840 / 2991
1992 Ethylbenzene MR 6 SDWIS / IL0995840 / 2992

How Sheridan Correctional Center Compares

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

Metric Sheridan Correctional Center Illinois avg Federal benchmark
Total violations 124 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 1,670 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 Sheridan Correctional Center water safe to drink? ▼
Sheridan Correctional Center (PWS ID: IL0995840) has 124 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,670 people using Groundwater sources.
How many people does Sheridan Correctional Center serve? ▼
Sheridan Correctional Center serves 1,670 people in Sheridan, Illinois. It is a State-owned system using Groundwater water sources with 44 service connections.
What type of violations does Sheridan Correctional Center have? ▼
Sheridan Correctional Center has 124 total violations: 0 health-based violations (MCL exceedances or treatment failures), 117 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sheridan Correctional Center water? ▼
No PFAS testing data is available for Sheridan Correctional Center under the EPA's UCMR5 monitoring program.
What water source does Sheridan Correctional Center use? ▼
Sheridan Correctional Center 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.