Is Fremont tap water safe to drink?

Yes with good quality

Fremont'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
4 GPG
Hardness
Not detected
PFAS

1 Issue Detected in Fremont

Arsenic Approaching Limit (0.2 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Fremont
California

945,369,453,794,538 · Mokelumne River

Fremont, CA Water Quality Report

Low Risk Updated March 2026 230,504 residents
See Best Filters for Fremont
85
Purity Score

Contaminant Levels

PFAS
ND
Lead
3.2 ppb
Nitrate
0.4 mg/L
Arsenic
0.2 mg/L
Hardness
4 gpg

Health Insights

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

Score

85 /100
Excellent
"Good" threshold (70)

Fremont tap water is sourced from Mokelumne River and treated by East Bay Municipal Utility District. Overall purity score: 85/100 (Excellent). Updated for 2026.

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Best filters matched to Fremont's 1 issue.

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Fremont Water FAQ

Is Fremont CA tap water safe to drink in 2026?
Fremont 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 Fremont CA use chlorine or chloramine for disinfection?
Fremont 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 Fremont CA water and what is the TDS level?
Fremont water hardness is 4.0 grains per gallon (moderate) with a TDS of 115 ppm (good). This level is unlikely to cause significant scale buildup in household plumbing.
Has PFAS been found in Fremont CA drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Fremont drinking water.
What is the best water filter for Fremont?
Based on Fremont's water profile, we recommend the Clearly Filtered Water Pitcher. Fremont 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
  • East Bay Municipal Utility District CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

© 2026 PurityMap. For informational purposes only.

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