County Water Quality Report

Pennington County, South Dakota

1 public water system serving 72,009 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
64/100
Utilities rated 1
Population served 72,009

Top water quality concerns in Pennington County

  • Arsenic significantly above health guidelinein 1 of 1 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 1 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 1 utilities

All utilities in Pennington County

Click any utility for full grade card, contaminant data, and treatment plant contact info.

D
64/100

RAPID CITY

RAPID CITY · 72,009 residents

Top concern: Arsenic significantly above health guideline

View report →