OH / Water Quality
Water in Dayton, OH
Find your exact water system
Multiple systems serve this area. Enter your address for the best match.
140,407 people served · Surface water
ViolationPFAS→
16,469 people served · Groundwater
Violation→
168 people served · Groundwater
Violation→
146 people served · Purchased surface water
ViolationPFAS→
90 people served · Purchased surface water
Violation→
90 people served · Groundwater
Violation→
55 people served · Groundwater
Violation→
Data sources: EPA SDWIS · EPA UCMR5 · USGS. WaterScore is informational only. Last updated: 2026.