A94/100
SOUTHWEST REGIONAL WATER DISTRICT — Water Quality Report 2026
Serving 42,856 people · Ohio
Water Source
Groundwater
County
—
System ID
OH0903912
Violations
0
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 859.00 mg/L | 1.30 mg/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
This system has a clean compliance history.
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 SOUTHWEST REGIONAL WATER DISTRICT
Is SOUTHWEST REGIONAL WATER DISTRICT water safe to drink?
SOUTHWEST REGIONAL WATER DISTRICT water receives a grade of A (94/100), which is considered excellent. Out of 74 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has SOUTHWEST REGIONAL WATER DISTRICT detected?
74 contaminants were tested in SOUTHWEST REGIONAL WATER DISTRICT's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does SOUTHWEST REGIONAL WATER DISTRICT have any EPA violations?
No, SOUTHWEST REGIONAL WATER DISTRICT has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does SOUTHWEST REGIONAL WATER DISTRICT serve?
SOUTHWEST REGIONAL WATER DISTRICT serves approximately 42,856 people, Ohio.
What type of water does SOUTHWEST REGIONAL WATER DISTRICT provide?
SOUTHWEST REGIONAL WATER DISTRICT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is OH0903912.
How does SOUTHWEST REGIONAL WATER DISTRICT compare to other utilities in Ohio?
SOUTHWEST REGIONAL WATER DISTRICT scores 94/100 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.