A84/100
KNOX COUNTY WATER AND WASTEWATER PWS — Water Quality Report 2026
Serving 7,710 people · Ohio
Water Source
Groundwater
County
—
System ID
OH4202012
Violations
5
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 491.00 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Surface water treatment technique failure
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 KNOX COUNTY WATER AND WASTEWATER PWS
Is KNOX COUNTY WATER AND WASTEWATER PWS water safe to drink?
KNOX COUNTY WATER AND WASTEWATER PWS water receives a grade of A (84/100), which is considered excellent. Out of 32 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has KNOX COUNTY WATER AND WASTEWATER PWS detected?
32 contaminants were tested in KNOX COUNTY WATER AND WASTEWATER PWS's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does KNOX COUNTY WATER AND WASTEWATER PWS have any EPA violations?
Yes, KNOX COUNTY WATER AND WASTEWATER PWS has 5 EPA violation(s) on record, with the most recent in 2022. Violation types include Other, MR.
How many people does KNOX COUNTY WATER AND WASTEWATER PWS serve?
KNOX COUNTY WATER AND WASTEWATER PWS serves approximately 7,710 people, Ohio.
What type of water does KNOX COUNTY WATER AND WASTEWATER PWS provide?
KNOX COUNTY WATER AND WASTEWATER PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH4202012.
How does KNOX COUNTY WATER AND WASTEWATER PWS compare to other utilities in Ohio?
KNOX COUNTY WATER AND WASTEWATER PWS scores 84/100 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.