Is Gillette tap water safe to drink?

Yes with good quality

Gillette'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.

81/100
Purity Score
2
Issues Found
8.5 GPG
Hardness
Not detected
PFAS

2 Issues Detected in Gillette

Moderately Hard Water (8.5 GPG)

Hardness above 7 GPG can cause minor scale buildup.

Hardness data for Gillette

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Gillette
Wyoming

827,168,271,782,718 · Keyhole Reservoir and groundwater

Gillette, WY Water Quality Report

Low Risk Updated March 2026 33,403 residents
See Best Filters for Gillette
81
Purity Score

Contaminant Levels

PFAS
ND
Lead
1.2 ppb
Nitrate
0.5 mg/L
Arsenic
0.2 mg/L
Hardness
8.5 gpg

Health Insights

  • 1
    At 8.5 GPG, Gillette's water qualifies as moderately hard. This can cause limescale in pipes and shorten appliance lifespan.

Score

81 /100
Good
"Good" threshold (70)

Gillette tap water is sourced from Keyhole Reservoir and groundwater and treated by City of Gillette Water. Water hardness is hard at 8.5 GPG which may cause scale buildup. Overall purity score: 81/100 (Good). Updated for 2026.

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Best filters matched to Gillette's 2 issues.

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Gillette Water FAQ

Is Gillette WY tap water safe to drink in 2026?
Gillette tap water meets EPA federal drinking water standards and scores 81/100 (Good) 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 Gillette WY use chlorine or chloramine for disinfection?
Gillette 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 Gillette WY water and what is the TDS level?
Gillette water hardness is 8.5 grains per gallon (hard) with a TDS of 340 ppm (poor). This level causes noticeable scale buildup in water heaters kettles and dishwashers. A water softener is recommended to protect plumbing and reduce soap usage.
Has PFAS been found in Gillette WY drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Gillette drinking water.
What is the best water filter for Gillette?
Based on Gillette's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Gillette water scores well overall. A pitcher filter provides extra precaution and improves taste for drinking and cooking.

Nearby Reports

CheyenneWyoming — 85/100LaramieWyoming — 85/100SheridanWyoming — 85/100

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Data Sources

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

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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