Is Casper tap water safe to drink?

Yes with good quality

Casper'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
5.2 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Casper

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Casper
Wyoming

826,018,260,282,604 · North Platte River

Casper Drinking Water Quality Report

Low Risk Updated March 2026 59,718 residents
See Best Filters for Casper
85
Purity Score

Casper's drinking water is sourced from North Platte River and treated by City of Casper Utilities. This analysis covers PFAS testing, hardness, chlorine levels, lead risk, and overall safety.

Contaminant Levels

PFAS
ND
Lead
1.5 ppb
Nitrate
0.5 mg/L
Arsenic
0.2 mg/L
Hardness
5.2 gpg

Health Insights

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

Score

85 /100
Excellent
"Good" threshold (70)

Casper tap water is sourced from North Platte River and treated by City of Casper Utilities. Overall purity score: 85/100 (Excellent). Updated for 2026.

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Best filters matched to Casper's 1 issue.

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Explore Casper Water Data

PFAS Levels in CasperPFAS testing data
Casper Lead LevelsLead testing data
Water Hardness in CasperHardness levels
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Casper Water FAQ

Is Casper WY tap water safe to drink in 2026?
Casper 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 Casper WY use chlorine or chloramine for disinfection?
Casper uses chlorine as the primary disinfectant with a residual level of 0.9 ppm. Standard activated carbon filters including pitcher filters are effective at removing free chlorine taste and odor.
How hard is Casper WY water and what is the TDS level?
Casper water hardness is 5.2 grains per gallon (moderate) with a TDS of 180 ppm (fair). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Casper WY drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Casper drinking water.
What is the best water filter for Casper?
Based on Casper's water profile, we recommend the Clearly Filtered Water Pitcher. Casper water scores well overall. A pitcher filter provides extra precaution and improves taste for drinking and cooking.

Nearby Reports

GilletteWyoming — 81/100CheyenneWyoming — 85/100LaramieWyoming — 85/100Rock SpringsWyoming — 85/100SheridanWyoming — 85/100

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Data Sources

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

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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