Piercy, CA Water Safety: 66/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
For most households in Piercy, CA tap water is adequate — the middle-tier grade reflects gaps in specific service areas.
How Piercy Compares
Data: EPA SDWIS Last verified: 2026-06-03
Piercy's Water Providers
Most residential addresses in Piercy, CA are served by a single water utility — the dominant system among the 1 provider tracked in federal data.
Overview
We track water quality and home safety data for 1 ZIP code in Piercy, California, covering 1 community water system serving approximately 2,041 people.
No EPA violations recorded across any ZIP codes in Piercy — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Piercy: C (66/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Piercy water systems draw from: Surface water.
Lead & Copper
- Lead data: not yet available for Piercy
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 95587 | C | GARBERVILLE SANITARY DISTRICT | 2,041 |
All ZIP Codes in Piercy
- 95587 [C]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Piercy Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Piercy Infrastructure Age
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Why does housing age matter for water safety? Homes built before 1986 may have lead-soldered copper plumbing joints — a practice banned that year. Piercy's median build year of 1995 places much of the city's housing in the post-ban era, reducing that specific risk pathway for most residents.
Most homes in Piercy were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
What You Can Do in Piercy
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
Deep Dive Reports
Detailed analysis for Piercy, CA