Is Westminster tap water safe to drink?

Yes with good quality

Westminster'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
2.1 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Westminster

Arsenic Approaching Limit (0.1 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Westminster
Colorado

800,308,003,180,234 · South Platte River and Standley Lake

Westminster Water Quality Report (2026)

Low Risk Updated March 2026 116,317 residents
See Best Filters for Westminster
85
Purity Score

This report analyzes Westminster'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
1.6 ppb
Nitrate
0.4 mg/L
Arsenic
0.1 mg/L
Hardness
2.1 gpg

Health Insights

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

Score

85 /100
Excellent
"Good" threshold (70)

Westminster tap water is sourced from South Platte River and Standley Lake and treated by City of Westminster Water. Overall purity score: 85/100 (Excellent). Updated for 2026.

Fix Your Water

Best filters matched to Westminster's 1 issue.

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Explore Westminster Water Data

PFAS in WestminsterForever chemicals
Lead in WestminsterLead risk
Westminster Hard WaterHardness data
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Westminster Water FAQ

Is Westminster CO tap water safe to drink in 2026?
Westminster 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 Westminster CO use chlorine or chloramine for disinfection?
Westminster uses chloramine as the primary disinfectant with a residual level of 0.9 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 Westminster CO water and what is the TDS level?
Westminster water hardness is 2.1 grains per gallon (soft) with a TDS of 58 ppm (good). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Westminster CO drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Westminster drinking water.
What is the best water filter for Westminster?
Based on Westminster's water profile, we recommend the Clearly Filtered Water Pitcher. Westminster water scores well overall. A pitcher filter provides extra precaution and improves taste for drinking and cooking.

Nearby Reports

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

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • City of Westminster Water CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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