Is Fort Collins tap water safe to drink?

Yes with good quality

Fort Collins's tap water meets all EPA standards and scores well on our analysis. It is generally safe to drink though filtration can improve taste and provide extra precaution.

85/100
Purity Score
1
Issues Found
2.6 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Fort Collins

Arsenic Approaching Limit (0.1 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Fort Collins
Colorado

805,218,052,280,523 · Cache la Poudre River

Drinking Water in Fort Collins: 2026 Analysis

Low Risk Updated March 2026 164,000 residents
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85
Purity Score

This report analyzes Fort Collins's tap water across five key indicators: PFAS, lead, hardness, chlorine, and TDS. Each section links to deeper data and filter options suited to CO water conditions.

Contaminant Levels

PFAS
ND
Lead
1.2 ppb
Nitrate
0.3 mg/L
Arsenic
0.1 mg/L
Hardness
2.6 gpg

Health Insights

  • 1
    Fort Collins's water meets current EPA standards. Filtration can improve taste and provide extra safety.

Score

85 /100
Excellent
"Good" threshold (70)

Fort Collins tap water is sourced from Cache la Poudre River and treated by Fort Collins Utilities. Overall purity score: 85/100 (Excellent). Updated for 2026.

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Explore Fort Collins Water Data

PFAS in Fort CollinsForever chemicals
Lead in Fort CollinsLead risk
Fort Collins Hard WaterHardness data
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Fort Collins Water FAQ

Is Fort Collins CO tap water safe to drink in 2026?
Fort Collins tap water meets EPA federal drinking water standards and scores 85/100 (Excellent) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.
Does Fort Collins CO use chlorine or chloramine for disinfection?
Fort Collins uses chloramine as the primary disinfectant with a residual level of 0.8 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.
How hard is Fort Collins CO water and what is the TDS level?
Fort Collins water hardness is 2.6 grains per gallon (soft) with a TDS of 75 ppm (good). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Fort Collins CO drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Fort Collins drinking water.

Nearby Reports

Colorado SpringsColorado — 70/100PuebloColorado — 82/100GreeleyColorado — 85/100DenverColorado — 85/100AuroraColorado — 85/100LakewoodColorado — 85/100

All Colorado cities

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Fort Collins Utilities CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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