Water monitoring in Sioux Falls, South Dakota has logged PFAS at detectable levels in recent sampling cycles.

Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14

PFAS in Sioux Falls Tap Water

PFAS has been detected in Sioux Falls, South Dakota drinking water at a maximum level of 0.0061 ppt — below the EPA MCL of 4 ppt (PFOA/PFOS individually).

This analysis covers 223,087 residents across 20 ZIP codes in Sioux Falls.

Sioux Falls's overall water quality grade is C (61/100).

Is PFAS in Sioux Falls Water Safe?

PFAS was detected in Sioux Falls 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

Average pfas level across Sioux Falls: 1 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 Sioux Falls 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

• PFAS — National Overview
• South Dakota Water Quality
• Sioux Falls Water Quality
• Check Your ZIP Code