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CHILLICOTHE CITY PWS

PWS ID: OH7100112 · CHILLICOTHE, Ohio 45601

CHILLICOTHE CITY PWS serves 21,725 people in CHILLICOTHE, Ohio using Groundwater water sources. It has 24 recorded EPA violations, including 0 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: CHILLICOTHE CITY PWS

CHILLICOTHE CITY PWS is a local-owned community water system that delivers drinking water to 21,725 residents in CHILLICOTHE, Ohio (Ross County) through 10,205 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 24 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 21 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 3 violations (Other). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 0.003 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

Across Ohio, EPA tracks 4,181 public water systems serving 11,085,226 people, with 288,388 cumulative violations and 52,412 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. CHILLICOTHE CITY PWS's 24 violations sit below the Ohio average. Statewide, 204 of 346 UCMR5-tested systems have reported PFAS detections (59%). 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

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

Population Served
21,725
Total Violations
24
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
10,205
County
Ross
School/Daycare
No
MCL Violations
0
Monitoring Violations
21
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 3 2019
Endrin MR 3 1992
2,4-D MR 3 1992
BHC-GAMMA MR 3 1992
Toxaphene MR 3 1992
2,4,5-TP MR 3 1992
Methoxychlor MR 3 1992
Coliform (TCR) MR 3 1999

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 60 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeS 4/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
ADONA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
HFPO-DA 4/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 4/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
6:2 FTS 4/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
4:2 FTS 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
8:2 FTS 4/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFMPA 4/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 4/3/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFMBA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFEESA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 4/3/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFBS 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFPeA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
11Cl-PF3OUdS 4/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFUnA 4/3/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFHxA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDoA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFOA 4/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpA 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpS 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
NMeFOSAA 4/3/2023 <0.006 µg/L 0.006 µg/L Not Detected
NEtFOSAA 4/3/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFTrDA 4/3/2023 <0.007 µg/L 0.007 µg/L Not Detected
PFTA 4/3/2023 <0.008 µg/L 0.008 µg/L Not Detected
PFOS 4/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFNA 4/3/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHxS 4/3/2023 <0.003 µg/L 0.003 µg/L Not Detected
lithium 4/3/2023 <9 µg/L 9 µg/L Not Detected
8:2 FTS 11/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFPeS 11/8/2023 <0.004 µg/L 0.004 µg/L Not Detected
NFDHA 11/8/2023 <0.02 µg/L 0.02 µg/L Not Detected
PFEESA 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMBA 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
9Cl-PF3ONS 11/8/2023 <0.002 µg/L 0.002 µg/L Not Detected
PFPeA 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
4:2 FTS 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
6:2 FTS 11/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
PFBA 11/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
HFPO-DA 11/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
11Cl-PF3OUdS 11/8/2023 <0.005 µg/L 0.005 µg/L Not Detected
ADONA 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFHpA 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFDA 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFBS 11/8/2023 0.0030 µg/L 0.003 µg/L Detected
PFHxS 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFMPA 11/8/2023 <0.004 µg/L 0.004 µg/L Not Detected
PFHpS 11/8/2023 <0.003 µg/L 0.003 µg/L Not Detected
PFNA 11/8/2023 <0.004 µg/L 0.004 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 CITY PWS.

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 OH7100112 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Ohio Drinking Water Authority

Ohio EPA — Division of Drinking and Ground Waters is the primacy agency that licenses and inspects CHILLICOTHE CITY PWS under EPA-delegated authority.

Open OH regulator portal

Source: Ohio EPA — Division of Drinking and Ground Waters

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
2019 Consumer Confidence Rule Other 3 SDWIS / OH7100112 / 7000
1999 Coliform (TCR) MR 3 SDWIS / OH7100112 / 3100
1992 Endrin MR 3 SDWIS / OH7100112 / 2005
1992 2,4-D MR 3 SDWIS / OH7100112 / 2105
1992 BHC-GAMMA MR 3 SDWIS / OH7100112 / 2010
1992 Toxaphene MR 3 SDWIS / OH7100112 / 2020
1992 2,4,5-TP MR 3 SDWIS / OH7100112 / 2110
1992 Methoxychlor MR 3 SDWIS / OH7100112 / 2015

How CHILLICOTHE CITY PWS Compares

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

Metric CHILLICOTHE CITY PWS Ohio avg Federal benchmark
Total violations 24 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 59% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 21,725 2,651 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,181 regulated public water systems in Ohio.

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 CITY PWS water safe to drink? ▼
CHILLICOTHE CITY PWS (PWS ID: OH7100112) has 24 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 21,725 people using Groundwater sources.
How many people does CHILLICOTHE CITY PWS serve? ▼
CHILLICOTHE CITY PWS serves 21,725 people in CHILLICOTHE, Ohio. It is a Local-owned system using Groundwater water sources with 10,205 service connections.
What type of violations does CHILLICOTHE CITY PWS have? ▼
CHILLICOTHE CITY PWS has 24 total violations: 0 health-based violations (MCL exceedances or treatment failures), 21 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CHILLICOTHE CITY PWS water? ▼
Yes. UCMR5 testing detected 1 PFAS compound in CHILLICOTHE CITY PWS's water supply: PFBS. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does CHILLICOTHE CITY PWS use? ▼
CHILLICOTHE CITY PWS 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 Kiznis Studio Editorial