CheckPFAS

City overview · Los Angeles County

PFAS in Palmdale, CA

High Risk

EPA UCMR 5 tested 4 public water systems serving the Palmdale area across 3 ZIP codes. At least one utility serving Palmdale has PFAS above the EPA's enforceable limit.

Water systems tested
4
Systems above EPA limits
1
ZIP codes covered
3
County
Los Angeles County, California

Plain English

01What this means for Palmdale

Across the 4 public water systems tested in the Palmdale area under EPA UCMR 5, one or more measured a PFAS compound above the federal Maximum Contaminant Level. Contamination varies by utility and neighborhood — find your exact ZIP code below to see the system that serves you. If you're in an affected area, an NSF/ANSI 53 or 58 certified filter (carbon block or reverse osmosis) is the most reliable way to reduce PFAS at the tap.

By utility

02Water systems serving Palmdale

  1. NORTHROP GRUMMAN CORP.

    8 detected · 1 above limit · PWSID CA1910097

    High Risk
  2. PALMDALE WATER DIST.

    3 detected · 0 above limit · PWSID CA1910102

    Low Level
  3. PALM RANCH IRRIGATION DIST.

    1 detected · 0 above limit · PWSID CA1910103

    Low Level
  4. QUARTZ HILL WATER DIST.

    1 detected · 0 above limit · PWSID CA1910130

    Low Level

By ZIP code

03Find your exact result

Contamination can differ block to block. Select your ZIP code for the precise reading at the utility that serves your address.

Source & Methodology

About this data

Source
EPA UCMR 5
Sampling period
January 2023 – December 2025
Aggregation
4 utilities across 3 ZIP codes
Detection threshold (MRL)
~1.5–2 ppt

City-level figures aggregate the individual public water systems tested under EPA UCMR 5 whose service area falls within the Palmdale area. Values reflect water quality at the treatment plant; your home's plumbing can affect what reaches your tap. Select your ZIP above for the utility-specific reading.