C51/100
GREENE CO.-NORTHWEST REG WATER — Water Quality Report 2026
Serving 41,000 people · Ohio
Water Source
Groundwater
County
—
System ID
OH2903512
Violations
19
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 200.00 mg/L | 1.30 mg/L | Over Limit |
strontium | 1800.00 µg/L | — | Above Goal |
chlorate | 427.00 µg/L | — | Above Goal |
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 GREENE CO.-NORTHWEST REG WATER
Is GREENE CO.-NORTHWEST REG WATER water safe to drink?
GREENE CO.-NORTHWEST REG WATER water receives a grade of C (51/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 19 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has GREENE CO.-NORTHWEST REG WATER detected?
67 contaminants were tested in GREENE CO.-NORTHWEST REG WATER's water. Notable contaminants include Copper (90th percentile), strontium, chlorate. 1 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does GREENE CO.-NORTHWEST REG WATER have any EPA violations?
Yes, GREENE CO.-NORTHWEST REG WATER has 19 EPA violation(s) on record, with the most recent in 2019. Violation types include Other, MR, MCL. 4 are health-based violations.
How many people does GREENE CO.-NORTHWEST REG WATER serve?
GREENE CO.-NORTHWEST REG WATER serves approximately 41,000 people, Ohio.
What type of water does GREENE CO.-NORTHWEST REG WATER provide?
GREENE CO.-NORTHWEST REG WATER sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH2903512.
How does GREENE CO.-NORTHWEST REG WATER compare to other utilities in Ohio?
GREENE CO.-NORTHWEST REG WATER scores 51/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Ohio state page for a full comparison of water systems.