California · population 8,435
Lead pipes in Los Altos Hills, CA
No lead lines reported
Most of Los Altos Hills (population 8,435) gets its water from Purissima Hills Water District, which reported 2,324 service lines and no lead, galvanized or unknown lines.
0% of Purissima Hills Water District's service lines are lead or galvanized requiring replacement, lower than the California average (0.1%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 0%
- Non-lead 100%
Latest lead test for Purissima Hills Water District (Jan 2024–Dec 2026): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015 for Purissima Hills Water District.
Water systems serving Los Altos Hills
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Purissima Hills Water DistrictMain system | 0 | 0 | 0 | 0% |
| CWSC Los Altos SuburbanServes nearby areas | 0 | 0 | 0 | 0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Los Altos Hills
The counts above cover the whole water system. To see whether your line is lead, look up your address on Purissima Hills Water District's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- Palo Altono lead reported
- Los Altosno lead reported
- Mountain Viewno lead reported
- Portola Valleyno lead reported
- Cupertinono lead reported
- Sunnyvaleno lead reported
- East Palo Altono lead reported
- Athertonno lead reported
Check another water system
Questions
Does Los Altos Hills, CA have lead pipes?
Purissima Hills Water District, which serves Los Altos Hills, reported no lead, galvanized or unknown service lines.
Who supplies water to Los Altos Hills?
EPA's service area maps place most of Los Altos Hills in Purissima Hills Water District's service area (PWSID CA4310021). CWSC Los Altos Suburban also serves parts of the city or nearby areas.
How do I check whether my Los Altos Hills home has a lead service line?
Search your address on Purissima Hills Water District's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Los Altos Hills be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Purissima Hills Water District whether your street is scheduled and whether it covers the private side.