Detected PFAS

PFAS in Lewes, DE Drinking Water

Q: Is pfas in Lewes water safe?

PFAS was detected in Lewes water at 0.0095 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 Lewes water?

The maximum detected level of pfas in Lewes water is 0.0095 ppt. The EPA limit is 4 ppt (PFOA/PFOS individually). See the ZIP code table above for area-specific levels.

PFAS data for Lewes, Delaware · 29,599 residents · 1 ZIP code

ZipCheckup's reading of PFAS in Lewes, Delaware: the highest detected level is 0.0095 ppt; the EPA limit is 4 ppt (PFOA/PFOS individually). PFAS carries a high health-risk designation.

For residents of Lewes, Delaware, PFAS has appeared in public water supply sampling data.

0.0095 ppt

Max Level Detected

15 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 Lewes Tap Water

PFAS has been detected in Lewes, Delaware drinking water at a maximum level of 0.0095 detections — relative to the EPA MCL of 4 ppt (PFOA/PFOS individually).

This analysis covers 29,599 residents across 1 ZIP code in Lewes.

Lewes's overall water quality grade is C (55/100).

Is PFAS in Lewes Water Safe?

PFAS was detected in Lewes 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
19958	15 detections	4 ppt (PFOA/PFOS individually)	Not comparable

Average pfas level across Lewes: 15 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 Lewes 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 → Delaware → Lewes

How to cite this page

APA ZipCheckup. (2026). PFAS in Lewes, DE Drinking Water. https://zipcheckup.com/contaminants/pfas/lewes-de/

BibTeX

@misc{zipcheckup-contaminants-pfas-lewes-de,
  author = {{ZipCheckup}},
  title  = {{PFAS in Lewes, DE Drinking Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/contaminants/pfas/lewes-de/}
}

Data as of July 2026.