County Water Quality Report

Larimer County, Colorado

3 public water systems serving 338,904 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
65/100
Utilities rated 3
Population served 338,904

Top water quality concerns in Larimer County

  • Haloacetic acids (HAA9) significantly above health guidelinein 3 of 3 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 3 of 3 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 3 of 3 utilities
  • PFAS contaminationin 1 of 3 utilities

All utilities in Larimer County

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

C
67/100

FT COLLINS LOVELAND WD

FORT COLLINS · 63,532 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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C
67/100

LOVELAND CITY OF

LOVELAND · 95,471 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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D
61/100

FT COLLINS CITY OF

FORT COLLINS · 179,901 residents

Top concern: PFAS contamination

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