B71/100
NILES CITY PWS — Water Quality Report 2026
Serving 21,961 people · Ohio
Water Source
Purchased Surface Water
County
—
System ID
OH7802403
Violations
6
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 37.00 mg/L | 1.30 mg/L | Over Limit |
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2021.
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 NILES CITY PWS
Is NILES CITY PWS water safe to drink?
NILES CITY PWS water receives a grade of B (71/100), which is considered good. Out of 70 contaminants tested, 2 exceed EPA legal limits. 3 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has NILES CITY PWS detected?
70 contaminants were tested in NILES CITY PWS's water. Notable contaminants include Copper (90th percentile), PFOS, Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does NILES CITY PWS have any EPA violations?
Yes, NILES CITY PWS has 6 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MCL. 1 are health-based violations.
How many people does NILES CITY PWS serve?
NILES CITY PWS serves approximately 21,961 people, Ohio.
What type of water does NILES CITY PWS provide?
NILES CITY PWS sources its water from purchased surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OH7802403.
How does NILES CITY PWS compare to other utilities in Ohio?
NILES CITY PWS scores 71/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Ohio state page for a full comparison of water systems.