EPA data as of Oct 2026 · page updated 2026-10-30

Chillicothe Correctional Institution

Chillicothe Correctional Institution (EPA ID OH7101212) in Oak Hill, OH supplies groundwater (wells) to about 9,000 people: 1 violation since 2016, latest lead result 0.8 ppb, PFAS not detected.

System facts

People served9,000
Connections130
Sourcegroundwater (wells)
WholesalerNo

Health-based violations

Contaminant or ruleHealth-based violations since 2016
Lead and Copper Rule Revisions1

A health-based violation means a contaminant exceeded its legal limit (MCL) or a required treatment technique was not met, as reported by the state to EPA’s SDWIS. All are listed as resolved or archived; the latest began Oct 2024.

Lead

Jan 20220.8 ppb
Jan 20194.7 ppb
Jan 20160 ppb
Jan 20130 ppb
Jan 20105.1 ppb
Jan 20081.5 ppb
Jan 20050 ppb
Jan 20025 ppb

90th-percentile lead per sampling round (90% of the homes sampled were at or below this level). Black line: EPA’s 15 ppb action level; under the Lead and Copper Rule Improvements the action level becomes 10 ppb from 2027.

PFAS

CompoundHighest resultSamples with detectionEPA limit
PFBSnot detected0 of 2—
PFHpAnot detected0 of 2—
PFBAnot detected0 of 2—
HFPO-DA (GenX)not detected0 of 2—
PFPeAnot detected0 of 2—
PFOAnot detected0 of 24 ppt MCL
PFNAnot detected0 of 2—
PFHxSnot detected0 of 2—
PFOSnot detected0 of 24 ppt MCL
PFDAnot detected0 of 2—
PFHxAnot detected0 of 2—

EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR 5), samples 2023–2025; ppt = parts per trillion (ng/L). The 4.0 ppt maximum contaminant levels for PFOA and PFOS were set by EPA in 2024; water systems have until the end of the decade to comply.

What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.

Questions

Has Chillicothe Correctional Institution had drinking water violations?

Health-based violations since 2016: Lead and Copper Rule Revisions. All are listed as resolved.

What is the lead level in Chillicothe Correctional Institution water?

The latest 90th-percentile lead result (Jan 2022) was 0.8 ppb. EPA’s action level is 15 ppb (10 ppb from 2027).

Does Chillicothe Correctional Institution have PFAS in its water?

None of the tested PFAS were found above EPA’s reporting limits in 2023–2025.