Willowbrook · Los Angeles County · tap water report
Willowbrook tap water: lead 0.0017 mg/L, 0 health-based EPA violations on record for GSWC - Southwest. Plain-English report and a free home water test.
6 measured results on file across every sampling period the EPA publishes.
GSWC - Southwest (PWSID CA1910155) has 1 violation in the EPA Safe Drinking Water Information System, 0 of them health-based.
GSWC - Southwest 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.
GSWC - Southwest's most recent Lead and Copper Rule result, from the 2024 to 2026 monitoring period, measured 0.0017 mg/L of 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.
GSWC - Southwest serves about 277,740 people in Los Angeles County and relies mainly on surface water. It is public water system CA1910155.
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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