Detected PFAS

PFAS in Norwalk, OH Drinking Water

Q: Is pfas in Norwalk water safe?

PFAS was detected in Norwalk water at 0.0102 ppt, below the EPA limit of 4 ppt (PFOA/PFOS individually). Check ZIP-level data on this page for your specific area.

Q: How much pfas is in Norwalk water?

The maximum detected level of pfas in Norwalk water is 0.0102 ppt. The EPA limit is 4 ppt (PFOA/PFOS individually). See the ZIP code table above for area-specific levels.

PFAS data for Norwalk, Ohio · 23,320 residents · 1 ZIP code

ZipCheckup's reading of PFAS in Norwalk, Ohio: the highest detected level is 0.0102 ppt; the EPA limit is 4 ppt (PFOA/PFOS individually). PFAS carries a high health-risk designation.

Over the past reporting period, water systems in Norwalk, Ohio have recorded PFAS at detectable concentrations in EPA compliance samples.

0.0102 ppt

Max Level Detected

3 ppt

Average Level

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 Last verified: 2026-07-13

PFAS in Norwalk Tap Water

PFAS has been detected in Norwalk, Ohio drinking water at a maximum level of 0.0102 detections — relative to the EPA MCL of 4 ppt (PFOA/PFOS individually).

This analysis covers 23,320 residents across 1 ZIP code in Norwalk.

Norwalk's overall water quality grade is C (64/100).

Is PFAS in Norwalk Water Safe?

PFAS was detected in Norwalk water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.

If you are concerned, a reverse osmosis or granular activated carbon filter can reduce pfas levels further.

PFAS Levels by ZIP Code

ZIP Code	PFAS Level	EPA Limit	Status
44857	3 detections	4 ppt (PFOA/PFOS individually)	Not comparable

Average pfas level across Norwalk: 3 ppt

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 Norwalk Water

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

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

Home → Contaminants → PFAS → Ohio → Norwalk

How to cite this page

APA ZipCheckup. (2026). PFAS in Norwalk, OH Drinking Water. https://zipcheckup.com/contaminants/pfas/norwalk-oh/

BibTeX

@misc{zipcheckup-contaminants-pfas-norwalk-oh,
  author = {{ZipCheckup}},
  title  = {{PFAS in Norwalk, OH Drinking Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/pfas/norwalk-oh/}
}

Data as of July 2026.