Walnut · Los Angeles County · tap water report
Walnut tap water: lead not detected, 0 health-based EPA violations on record. Plain-English report and a free home water test.
4 measured results on file across every sampling period the EPA publishes.
Suburban Water Systems-San Jose (PWSID CA1910205) has 1 violation in the EPA Safe Drinking Water Information System, 0 of them health-based.
Suburban Water Systems-San Jose has no health-based EPA violations in the last three years. Its measured lead results are listed on this page. What your own plumbing adds is a separate question, which is what the free in-home test answers.
Suburban Water Systems-San Jose's most recent Lead and Copper Rule result, from the 2023 to 2025 monitoring period, found no detectable lead at the 90th percentile of tested homes. The federal action level is 0.015 mg/L, so the system result sits under it. Lead usually enters water from a home's own pipes and fixtures, so a single house can differ from the system figure.
The EPA record lists 1 violation for this system, 0 of them health-based. The rest are monitoring and reporting notes.
Suburban Water Systems-San Jose serves about 170,523 people in Los Angeles County and relies mainly on surface water. It is public water system CA1910205.
Text 949-414-9944 for a free water test. A local FilteredWTR tech screens the water at your own faucet for hardness, chlorine and sediment and explains each reading while you watch. The visit is free, and afterward the decision stays yours.
A local FilteredWTR tech screens the water at your faucet for hardness, chlorine and sediment and explains each reading while you watch. The visit is free, and afterward the decision stays yours.
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