D34/100
DELPHOS CITY — Water Quality Report 2026
Serving 7,101 people · Ohio
Water Source
Surface Water
County
—
System ID
OH0200412
Violations
42
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 89.50 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 DELPHOS CITY
Is DELPHOS CITY water safe to drink?
DELPHOS CITY water receives a grade of D (34/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 42 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has DELPHOS CITY detected?
32 contaminants were tested in DELPHOS CITY's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does DELPHOS CITY have any EPA violations?
Yes, DELPHOS CITY has 42 EPA violation(s) on record, with the most recent in 2007. Violation types include TT, Other, MCL. 4 are health-based violations.
How many people does DELPHOS CITY serve?
DELPHOS CITY serves approximately 7,101 people, Ohio.
What type of water does DELPHOS CITY provide?
DELPHOS CITY sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is OH0200412.
How does DELPHOS CITY compare to other utilities in Ohio?
DELPHOS CITY scores 34/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our Ohio state page for a full comparison of water systems.