EPA records for the water systems mapped to 94567 in Pope Valley, CA contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 2 are marked health-based.

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

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At a Glance

• Water EPA records for water systems mapped to this ZIP show 2 health-based violations (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 3 - county-level radon potential, not evidence of a low home result.

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In this report

Frequently Asked Questions

Is the tap water in 94567 safe to drink?

EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 94567 (primary system: Howell Mountain Mutual Water Company), including 2 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 94567's water come from?

The recorded water source for Howell Mountain Mutual Water Company, a system mapped to ZIP code 94567, is Surface water. This system serves approximately 1,240 people.

How can I get my water tested in Pope Valley?

If Howell Mountain Mutual Water Company 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 94567?

94567 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Napa 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). Pope Valley, CA: 2 Health-Based Violations Recorded for Mapped Water Systems. https://zipcheckup.com/report/94567/

BibTeX

@misc{zipcheckup-report-94567,
  author = {{ZipCheckup}},
  title  = {{Pope Valley, CA: 2 Health-Based Violations Recorded for Mapped Water Systems}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/94567/}
}

Page version: October 2026.

Recommended Reading

Guides selected based on data for ZIP code 94567

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.