Public water system record

Southwest Regional Water District

Serves an area of Butler County, OH that includes Ross, Darrtown, Seven Mile and 3 more places · 42,856 people served

Federal records show no health-based violations and no monitoring or reporting issues for Southwest Regional Water District in the last ten years.

  • OH0903912
  • HAMILTON
  • OH
  • 42,856 served

System profile

Source water Groundwater
ZIP 45013
EPA system ID OH0903912

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Southwest Regional Water District draws water from 7 wells.
  • Lead pipe inventory: 0 lead and 15,644 unknown out of 15,855 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016, and no monitoring or reporting violations either.

Where the water comes from

Southwest Regional Water District draws water from 7 wells. 2 other community water systems buy water from Southwest Regional Water District.

Community systems that buy water from it

Annual water quality report

Southwest Regional Water District must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Ohio.