Fremont, CA water quality
Fremont, CA is served by 1 public water system, serving 344,000 people combined. Across those systems, we count 0 health-based violations in the last 5 years. The worst Tap Grade among them is A.
Water systems serving Fremont
Get alerted when Fremont's water gets a violation
Alert emails are in development; once they launch, we'll only email you about this water system. Unsubscribe anytime via contact@tapgraded.com.
Worried about what's in your tap?
See which water filters are certified to remove the contaminants found in your area.
Find a filter that matches your waterFrequently asked questions
Is Fremont, CA tap water safe to drink?
1 public water system serve Fremont, CA, with 0 health-based violations in the last 5 years across them. The worst Tap Grade among them is A. A Tap Grade summarizes public EPA compliance records; it is not a determination that water is safe or unsafe to drink.
Does Fremont's water have lead in it?
The most recent 90th-percentile lead sample is 0 ppb, versus the EPA action level of 15 ppb.
Has PFAS been detected in Fremont's water?
These systems were tested under UCMR5 and no PFAS was detected above the reporting limit in the analytes we track.
Other cities in California
See all of California →Source: EPA SDWIS/ECHO · Data as of 2026Q2
TapGraded presents public EPA data for information only — it is not health advice and not a determination that any water is safe or unsafe to drink. For health concerns, contact your water utility or local health department.