A83/100
CHILLICOTHE CITY PWS — Water Quality Report 2026
Serving 21,725 people · Ohio
Water Source
Groundwater
County
—
System ID
OH7100112
Violations
9
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 26.00 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2019.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About CHILLICOTHE CITY PWS
Is CHILLICOTHE CITY PWS water safe to drink?
CHILLICOTHE CITY PWS water receives a grade of A (83/100), which is considered excellent. Out of 67 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CHILLICOTHE CITY PWS detected?
67 contaminants were tested in CHILLICOTHE CITY PWS's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does CHILLICOTHE CITY PWS have any EPA violations?
Yes, CHILLICOTHE CITY PWS has 9 EPA violation(s) on record, with the most recent in 2019. Violation types include Other, MR.
How many people does CHILLICOTHE CITY PWS serve?
CHILLICOTHE CITY PWS serves approximately 21,725 people, Ohio.
What type of water does CHILLICOTHE CITY PWS provide?
CHILLICOTHE CITY PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH7100112.
How does CHILLICOTHE CITY PWS compare to other utilities in Ohio?
CHILLICOTHE CITY PWS scores 83/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Ohio state page for a full comparison of water systems.