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CHILLICOTHE

PWS ID: IL1430200 · CHILLICOTHE, Illinois 61523

CHILLICOTHE serves 5,996 people in CHILLICOTHE, Illinois using Groundwater water sources. It has 137 recorded EPA violations, including 21 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (3 compounds found).

Water Quality Snapshot: CHILLICOTHE

CHILLICOTHE is a local-owned community water system that delivers drinking water to 5,996 residents in CHILLICOTHE, Illinois (Peoria County) through 2,500 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 137 total violations for this system , of which 21 (15%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 101 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 Coliform (TCR), recorded in 21 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 3 PFAS compounds were detected in samples collected from this system, with a maximum reported concentration of 0.005 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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. CHILLICOTHE's 137 violations sit above the Illinois average. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

PFAS Detected

3 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
5,996
Total Violations
137
Health-Based Violations
21
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
2,500
County
Peoria
School/Daycare
No
MCL Violations
21
Monitoring Violations
101
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 21 2005
Coliform (TCR) MR 7 1993
Consumer Confidence Rule Other 4 2023
1,2,4-Trichlorobenzene MR 4 2022
Xylenes, Total MR 4 2022
DICHLOROMETHANE MR 4 2022
p-Dichlorobenzene MR 4 2022
1,1-Dichloroethylene MR 4 2022
trans-1,2-Dichloroethylene MR 4 2022
1,2-Dichloroethane MR 4 2022
1,1,1-Trichloroethane MR 4 2022
Carbon tetrachloride MR 4 2022
1,2-Dichloropropane MR 4 2022
Tetrachloroethylene MR 4 2022
CHLOROBENZENE MR 4 2022
Benzene MR 4 2022
Styrene MR 4 2022
Di(2-ethylhexyl) phthalate MR 4 2023
TTHM MR 4 2024
o-Dichlorobenzene MR 4 2022
Toluene MR 4 2022
cis-1,2-Dichloroethylene MR 4 2022
1,1,2-Trichloroethane MR 4 2022
Ethylbenzene MR 4 2022
Trichloroethylene MR 4 2022
LEAD AND COPPER RULE REVISIONS RPT 3 2025
Chlorine MR 3 2025
Revised Total Coliform Rule MON 2 2025
Gross Alpha, Excl. Radon and U MR 1 1977

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 4 of 420 samples detected PFAS.

Contaminant Date Result MRL Status
4:2 FTS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 8/27/2024 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 8/27/2024 <0.005 µg/L 0.005 µg/L Not Detected
9Cl-PF3ONS 8/27/2024 <0.002 µg/L 0.002 µg/L Not Detected
6:2 FTS 8/27/2024 0.0050 µg/L 0.005 µg/L Detected
PFDoA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 8/27/2024 0.0033 µg/L 0.003 µg/L Detected
PFMBA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 8/27/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFPeS 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBA 8/27/2024 <0.005 µg/L 0.005 µg/L Not Detected
8:2 FTS 8/27/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFUnA 8/27/2024 <0.002 µg/L 0.002 µg/L Not Detected
PFDA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFHxS 8/27/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOA 8/27/2024 <0.004 µg/L 0.004 µg/L Not Detected
NMeFOSAA 7/22/2024 <0.006 µg/L 0.006 µg/L Not Detected
lithium 7/22/2024 <9 µg/L 9 µg/L Not Detected
PFTA 7/22/2024 <0.008 µg/L 0.008 µg/L Not Detected
NEtFOSAA 7/22/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 7/22/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFNA 6/4/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFMPA 6/4/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeA 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
NFDHA 6/4/2024 <0.02 µg/L 0.02 µg/L Not Detected
PFHpS 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 6/4/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFHxS 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 6/4/2024 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 6/4/2024 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 6/4/2024 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 6/4/2024 <0.008 µg/L 0.008 µg/L Not Detected
PFHpA 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 6/4/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFPeS 6/4/2024 <0.004 µg/L 0.004 µg/L Not Detected
PFOS 6/4/2024 <0.004 µg/L 0.004 µg/L Not Detected
4:2 FTS 6/4/2024 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 6/4/2024 <0.003 µg/L 0.003 µg/L 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 CHILLICOTHE.

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 IL1430200 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 CHILLICOTHE 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 LEAD AND COPPER RULE REVISIONS RPT 3 SDWIS / IL1430200 / 5200
2025 Chlorine MR 3 SDWIS / IL1430200 / 0999
2025 Revised Total Coliform Rule MON 2 SDWIS / IL1430200 / 8000
2024 TTHM MR 4 SDWIS / IL1430200 / 2950
2023 Consumer Confidence Rule Other 4 SDWIS / IL1430200 / 7000
2023 Di(2-ethylhexyl) phthalate MR 4 SDWIS / IL1430200 / 2039
2022 1,2,4-Trichlorobenzene MR 4 SDWIS / IL1430200 / 2378
2022 Xylenes, Total MR 4 SDWIS / IL1430200 / 2955
2022 DICHLOROMETHANE MR 4 SDWIS / IL1430200 / 2964
2022 p-Dichlorobenzene MR 4 SDWIS / IL1430200 / 2969
2022 1,1-Dichloroethylene MR 4 SDWIS / IL1430200 / 2977
2022 trans-1,2-Dichloroethylene MR 4 SDWIS / IL1430200 / 2979
2022 1,2-Dichloroethane MR 4 SDWIS / IL1430200 / 2980
2022 1,1,1-Trichloroethane MR 4 SDWIS / IL1430200 / 2981
2022 Carbon tetrachloride MR 4 SDWIS / IL1430200 / 2982

How CHILLICOTHE Compares

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

Metric CHILLICOTHE Illinois avg Federal benchmark
Total violations 137 69.4 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 21 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection 3 compounds 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 5,996 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is CHILLICOTHE water safe to drink? ▼
CHILLICOTHE (PWS ID: IL1430200) has 137 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 3 PFAS compounds found. This system serves 5,996 people using Groundwater sources.
How many people does CHILLICOTHE serve? ▼
CHILLICOTHE serves 5,996 people in CHILLICOTHE, Illinois. It is a Local-owned system using Groundwater water sources with 2,500 service connections.
What type of violations does CHILLICOTHE have? ▼
CHILLICOTHE has 137 total violations: 21 health-based violations (MCL exceedances or treatment failures), 101 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CHILLICOTHE water? ▼
Yes. UCMR5 testing detected 3 PFAS compounds in CHILLICOTHE's water supply: 6:2 FTS, PFPeA, PFHxA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does CHILLICOTHE use? ▼
CHILLICOTHE 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.

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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.

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial