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Chillicothe, IL Tap Water Quality 2026

Water quality report for Chillicothe, IL — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Chillicothe's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Chillicothe PWSID: IL1430200 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 1.70 ppb, 11% of the action level and no violations are open. No PFAS was detected.

A

Chillicothe earns an A for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 1.70 ppb — 11% of the federal action level
PFAS tested, none detected
26 violations since 2015, 0 health-based
No violations currently open
Chillicothe's lead level vs. all Illinois community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 1.70 ppb — 11% of the federal action level
✓ Lower lead than 70% of Illinois utilities
Population Served
6128
~2960 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
26 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
11% of EPA action level
1.70 ppb
Action level: 15 ppb
The 90th-percentile lead result is 1.70 ppb, 11% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2025 Resolved
Revised Total Coliform Rule MONITORING FAILURE — — 2025 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2025 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2023 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

26 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Chillicothe
PWSID IL1430200
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 6,128
Service connections 2,960
Systems serving this area 2
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Chillicothe tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 1.70 ppb, 11% of the action level.
Does Chillicothe water have PFAS? ▼
It was tested for the six regulated PFAS compounds and none were detected.
Who supplies water to Chillicothe? ▼
Chillicothe (PWSID IL1430200), one of 2 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2026-03-18. No significant deficiencies were recorded.

What Should Chillicothe Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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