Detected PFAS

PFAS in Lake Forest, CA Drinking Water

PFAS data for Lake Forest, California · 66,461 residents · 1 ZIP code

ZipCheckup's reading of PFAS in Lake Forest, California: PFAS carries a high health-risk designation.

Not every city shows PFAS in its water data; in Lake Forest, California, federal sampling has confirmed its presence at detectable levels in at least one recent reporting cycle.

4 ppt (PFOA/PFOS individually)
EPA MCL
High
Health Risk
Reverse Osmosis or Granular Activated Carbon
Best Filter Method

Data: EPA SDWIS, CCR Reports, ECHO

PFAS in Lake Forest Tap Water

This analysis covers 66,461 residents across 1 ZIP code in Lake Forest.

Is PFAS in Lake Forest Water Safe?

PFAS was detected in Lake Forest water, but the available unit could not be normalized to the EPA MCL. ZipCheckup therefore cannot classify the result as within or above the federal limit.

Check the source utility record and consider independent testing before making a safety decision.

Health Effects of PFAS

  • Increased risk of kidney and testicular cancer
  • Thyroid disease and immune system suppression
  • Reproductive problems and reduced fertility
  • Elevated cholesterol and liver effects
  • Developmental effects in infants and children

Health risk severity: High. Governed by the PFAS National Primary Drinking Water Regulation (2024).

How PFAS Gets Into Drinking Water

  • Firefighting foam (AFFF) used at military bases and airports
  • Industrial manufacturing (non-stick coatings, stain-resistant fabrics)
  • Wastewater treatment plants that receive industrial discharge
  • Landfill leachate from PFAS-containing consumer products

What to Do About PFAS in Lake Forest Water

  1. Install a reverse osmosis system (most effective — removes 90%+ of PFAS)
  2. Granular activated carbon (GAC) filters remove some PFAS compounds
  3. Look for NSF 53 or NSF 58 certification specifically tested for PFAS
  4. Pitcher filters with activated carbon provide partial reduction

Look for filters certified under NSF 53 / NSF 58 for pfas removal.

Related

HomeContaminantsPFASCalifornia → Lake Forest

How to cite this page

APA ZipCheckup. (2026). PFAS in Lake Forest, CA Drinking Water. https://zipcheckup.com/contaminants/pfas/lake-forest-ca/
BibTeX
@misc{zipcheckup-contaminants-pfas-lake-forest-ca,
  author = {{ZipCheckup}},
  title  = {{PFAS in Lake Forest, CA Drinking Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/pfas/lake-forest-ca/}
}

Page version: August 2026.

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