B74/100
GAHANNA CITY PWS — Water Quality Report 2026
Serving 33,258 people · Ohio
Water Source
Purchased Surface Water
County
—
System ID
OH2501303
Violations
11
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
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 2013.
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 GAHANNA CITY PWS
Is GAHANNA CITY PWS water safe to drink?
GAHANNA CITY PWS water receives a grade of B (74/100), which is considered good. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GAHANNA CITY PWS detected?
69 contaminants were tested in GAHANNA CITY PWS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GAHANNA CITY PWS have any EPA violations?
Yes, GAHANNA CITY PWS has 11 EPA violation(s) on record, with the most recent in 2013. Violation types include MCL, MR, Other. 3 are health-based violations.
How many people does GAHANNA CITY PWS serve?
GAHANNA CITY PWS serves approximately 33,258 people, Ohio.
What type of water does GAHANNA CITY PWS provide?
GAHANNA 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 OH2501303.
How does GAHANNA CITY PWS compare to other utilities in Ohio?
GAHANNA CITY PWS scores 74/100 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.