Is Renton tap water safe to drink?

Yes with good quality

Renton'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
1 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Renton

Arsenic Approaching Limit (0.1 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Renton
Washington

980,559,805,698,057 · Cedar River via Seattle Public Utilities and local wells

Renton, WA Water Quality Report

Low Risk Updated March 2026 104,047 residents
See Best Filters for Renton
85
Purity Score

Contaminant Levels

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

Health Insights

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

Score

85 /100
Excellent
"Good" threshold (70)

Renton tap water is sourced from Cedar River via Seattle Public Utilities and local wells and treated by City of Renton Water Utility. Overall purity score: 85/100 (Excellent). Updated for 2026.

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Renton Water FAQ

Is Renton WA tap water safe to drink in 2026?
Renton 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 Renton WA use chlorine or chloramine for disinfection?
Renton uses chloramine as the primary disinfectant with a residual level of 0.7 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 Renton WA water and what is the TDS level?
Renton water hardness is 1.0 grains per gallon (soft) with a TDS of 28 ppm (excellent). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Renton WA drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Renton drinking water.
What is the best water filter for Renton?
Based on Renton's water profile, we recommend the Clearly Filtered Water Pitcher. Renton water scores well overall. A pitcher filter provides extra precaution and improves taste for drinking and cooking.

Nearby Reports

BellinghamWashington — 85/100SeattleWashington — 85/100SpokaneWashington — 85/100TacomaWashington — 85/100VancouverWashington — 85/100BellevueWashington — 85/100

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Data Sources

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

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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