Is Santa Rosa tap water safe to drink?

Yes with good quality

Santa Rosa'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
3.8 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Santa Rosa

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Santa Rosa
California

954,019,540,395,404 · Russian River and Sonoma Aqueduct

Santa Rosa, CA Water Quality Report

Low Risk Updated March 2026 178,127 residents
See Best Filters for Santa Rosa
85
Purity Score

Contaminant Levels

PFAS
ND
Lead
2 ppb
Nitrate
0.5 mg/L
Arsenic
0.2 mg/L
Hardness
3.8 gpg

Health Insights

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

Score

85 /100
Excellent
"Good" threshold (70)

Santa Rosa tap water is sourced from Russian River and Sonoma Aqueduct and treated by City of Santa Rosa Water. Overall purity score: 85/100 (Excellent). Updated for 2026.

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Santa Rosa Water FAQ

Is Santa Rosa CA tap water safe to drink in 2026?
Santa Rosa 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 Santa Rosa CA use chlorine or chloramine for disinfection?
Santa Rosa uses chloramine as the primary disinfectant with a residual level of 0.8 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 Santa Rosa CA water and what is the TDS level?
Santa Rosa water hardness is 3.8 grains per gallon (moderate) with a TDS of 130 ppm (good). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Santa Rosa CA drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Santa Rosa drinking water.
What is the best water filter for Santa Rosa?
Based on Santa Rosa's water profile, we recommend the Clearly Filtered Water Pitcher. Santa Rosa water scores well overall. A pitcher filter provides extra precaution and improves taste for drinking and cooking.

Nearby Reports

BakersfieldCalifornia — 55/100RiversideCalifornia — 58/100San BernardinoCalifornia — 58/100Moreno ValleyCalifornia — 58/100FontanaCalifornia — 58/100Chula VistaCalifornia — 61/100

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Data Sources

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

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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