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Community Water System · PWS IL1130950

Saybrook

Saybrook, Illinois 61770 - drinking water served from groundwater sources to 679 people, tracked in EPA SDWIS and UCMR5.

679
People served
278
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 278 drinking-water violations at Saybrook - above the Illinois per-system average.

278
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
679
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Saybrook

Saybrook is a local-owned community water system that delivers drinking water to 679 residents in Saybrook, Illinois (McLean County) through 336 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 278 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 258 monitoring and reporting violations are on file. The most recent violation on record dates to 2012.

The most frequently cited contaminant at this system is Xylenes, Total, recorded in 17 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%).

Saybrook's 278 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
679
Total Violations
278
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
336
County
McLean
School/Daycare
No
MCL Violations
0
Monitoring Violations
258
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Xylenes, Total MR 17 2005
Toluene MR 17 2005
Ethylbenzene MR 17 2005
Benzene MR 17 2005
Coliform (TCR) MR 12 2012
cis-1,2-Dichloroethylene MR 11 1995
p-Dichlorobenzene MR 11 1995
1,1-Dichloroethylene MR 11 1995
1,2-Dichloroethane MR 11 1995
1,1,1-Trichloroethane MR 11 1995
1,2-Dichloropropane MR 11 1995
Trichloroethylene MR 11 1995
Tetrachloroethylene MR 11 1995
CHLOROBENZENE MR 11 1995
Styrene MR 11 1995
o-Dichlorobenzene MR 11 1995
Carbon tetrachloride MR 11 1995
trans-1,2-Dichloroethylene MR 11 1995
Lead and Copper Rule MR 6 2011
1,2,4-Trichlorobenzene MR 6 1995
DICHLOROMETHANE MR 6 1995
1,1,2-Trichloroethane MR 6 1995
Chlorine MR 6 2012
Consumer Confidence Rule Other 4 2006
Di(2-ethylhexyl) phthalate MR 4 2005
Public Notice Other 2 2006
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 Saybrook.

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 IL1130950 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 Saybrook 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
2012 Coliform (TCR) MR 12 SDWIS / IL1130950 / 3100
2012 Chlorine MR 6 SDWIS / IL1130950 / 0999
2011 Lead and Copper Rule MR 6 SDWIS / IL1130950 / 5000
2006 Consumer Confidence Rule Other 4 SDWIS / IL1130950 / 7000
2006 Public Notice Other 2 SDWIS / IL1130950 / 7500
2005 Xylenes, Total MR 17 SDWIS / IL1130950 / 2955
2005 Toluene MR 17 SDWIS / IL1130950 / 2991
2005 Ethylbenzene MR 17 SDWIS / IL1130950 / 2992
2005 Benzene MR 17 SDWIS / IL1130950 / 2990
2005 Di(2-ethylhexyl) phthalate MR 4 SDWIS / IL1130950 / 2039
1995 cis-1,2-Dichloroethylene MR 11 SDWIS / IL1130950 / 2380
1995 p-Dichlorobenzene MR 11 SDWIS / IL1130950 / 2969
1995 1,1-Dichloroethylene MR 11 SDWIS / IL1130950 / 2977
1995 1,2-Dichloroethane MR 11 SDWIS / IL1130950 / 2980
1995 1,1,1-Trichloroethane MR 11 SDWIS / IL1130950 / 2981

How Saybrook Compares

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

Metric Saybrook Illinois avg Federal benchmark
Total violations 278 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 679 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 Saybrook water safe to drink? ▼
Saybrook (PWS ID: IL1130950) has 278 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 679 people using Groundwater sources.
How many people does Saybrook serve? ▼
Saybrook serves 679 people in Saybrook, Illinois. It is a Local-owned system using Groundwater water sources with 336 service connections.
What type of violations does Saybrook have? ▼
Saybrook has 278 total violations: 0 health-based violations (MCL exceedances or treatment failures), 258 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Saybrook water? ▼
No PFAS testing data is available for Saybrook under the EPA's UCMR5 monitoring program.
What water source does Saybrook use? ▼
Saybrook 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.