Is Rock Springs tap water safe to drink?

Yes with good quality

Rock Springs'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
6 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Rock Springs

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Rock Springs
Wyoming

8,290,182,902 · Green River

Rock Springs, WY: Water Quality and Filter Guide

Low Risk Updated March 2026 23,036 residents
See Best Filters for Rock Springs
85
Purity Score

Water quality in Rock Springs, Wyoming is evaluated here using public utility data and independent testing. The report includes a purity score, contaminant breakdown, and tailored filter recommendations.

Contaminant Levels

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

Health Insights

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

Score

85 /100
Excellent
"Good" threshold (70)

Rock Springs tap water is sourced from Green River and treated by City of Rock Springs Water. Overall purity score: 85/100 (Excellent). Updated for 2026.

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Best filters matched to Rock Springs's 1 issue.

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Explore Rock Springs Water Data

PFAS Levels in Rock SpringsPFAS testing data
Rock Springs Lead LevelsLead testing data
Water Hardness in Rock SpringsHardness levels
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Rock Springs Water FAQ

Is Rock Springs WY tap water safe to drink in 2026?
Rock Springs 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 Rock Springs WY use chlorine or chloramine for disinfection?
Rock Springs uses chlorine as the primary disinfectant with a residual level of 0.8 ppm. Standard activated carbon filters including pitcher filters are effective at removing free chlorine taste and odor.
How hard is Rock Springs WY water and what is the TDS level?
Rock Springs water hardness is 6.0 grains per gallon (moderate) with a TDS of 215 ppm (fair). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Rock Springs WY drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Rock Springs drinking water.

Nearby Reports

GilletteWyoming — 81/100CheyenneWyoming — 85/100CasperWyoming — 85/100LaramieWyoming — 85/100SheridanWyoming — 85/100

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Data Sources

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

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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