PFAS (Forever Chemicals) in South Dakota Well Water

EPA Data 2025 · Risk Level: Moderate

Avg Level

3.164 ppt

EPA Limit

4 ppt

% Above Limit

14.1%

Risk Level

moderate

Live DataLast updated: April 4, 2026·Source: EPA SDWIS & USGS

Water Quality Details

Contaminant	PFAS (Forever Chemicals)
Category	chemical
Average Level	3.164 ppt
Maximum Level	6.62 ppt
EPA Limit (MCL)	4 ppt
% Wells Above Limit	14.1%
Affected Wells	10,575
Testing Cost	$64
Treatment Cost	$2,381
vs National Avg	+1.146 ppt (+56.8%)

South Dakota Well Water Overview

Well Users

75,000

% on Well Water

14.8%

Quality Score

68/100

Highest Risk States for PFAS (Forever Chemicals)

#1Oklahoma18.4% above limit #2Louisiana17.1% above limit #3New Mexico14.6% above limit #4West Virginia14.3% above limit #5South Dakota14.1% above limit

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EPA SDWIS & USGS

📊

WellWaterPeek Research TeamData Specialists

Our team analyzes data from EPA SDWIS & USGS to deliver accurate, up-to-date information. All data is verified and cross-referenced with official sources.

✓ EPA SDWIS & USGS✓ Updated 2025

Frequently Asked Questions

Is pfas (forever chemicals) a problem in South Dakota well water?

In South Dakota, pfas (forever chemicals) levels average 3.164 ppt, with a maximum recorded level of 6.62 ppt. The EPA limit is 4 ppt. Currently 14.1% of tested wells exceed this limit, affecting approximately 10,575 wells.

How much does it cost to test for pfas (forever chemicals) in South Dakota?

Testing for pfas (forever chemicals) in South Dakota typically costs around $64. If treatment is needed, water treatment systems for pfas (forever chemicals) cost approximately $2,381.

What is the risk level of pfas (forever chemicals) in South Dakota well water?

The risk level for pfas (forever chemicals) in South Dakota is rated as moderate. The state average of 3.164 ppt is 56.8% above the national average of 2.018 ppt.

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