EPA records for the water systems mapped to 95391 in Tracy, CA contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Print Report

At a Glance

• Water No drinking-water violations in EPA records since 2021.
• Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
• Radon EPA Zone 2 - county-level radon potential, not a home measurement.

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In this report

Frequently Asked Questions

Is the tap water in 95391 safe to drink?

EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 95391 (primary system: City of Mountain House), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 95391's water come from?

The recorded water source for City of Mountain House, a system mapped to ZIP code 95391, is Surface water. This system serves approximately 24,948 people.

How does Tracy water compare to the national average?

Tracy's Home Safety Score ranks better than 93% of U.S. ZIP codes, and at or above 93% within California.

How can I get my water tested in Tracy?

If City of Mountain House supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

What is the radon risk for 95391?

95391 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in Alameda County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

How to cite this page

APA ZipCheckup. (2026). Tracy, CA (95391) Home Safety: 100/100. https://zipcheckup.com/report/95391/

BibTeX

@misc{zipcheckup-report-95391,
  author = {{ZipCheckup}},
  title  = {{Tracy, CA (95391) Home Safety: 100/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/95391/}
}

Page version: October 2026.

Recommended Reading

Guides selected based on data for ZIP code 95391

Radon Radon Testing & Mitigation Guide How to test for radon and reduce indoor levels. Home Safety Score Explained How ZipCheckup calculates your home safety score. Understanding Water Quality Reports How to read your annual CCR and what the numbers mean. Home Inspection Water Checklist What to check before buying a home. Best Water Filters by Contaminant Find a certified filter for a specific contaminant you are concerned about. Moving Checklist: Water & Utilities Essential steps for setting up water service in a new home.