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National Drinking Water Database


National Drinking Water Database - Chemical Contaminants

Perfluorooctane Sulfonate (PFOS)


Status: Unregulated - EPA has not established a maximum legal limit in tapwater for this contaminant.

 
Detected
Found above
health guidelines
Found above
legal limit
States
1
-
-
Water utilities
1
-
-
People Served
28,000
-
-

Perfluorooctane Sulfonate (PFOS) Exposure by State

Water utilities in 1 states have reported detecting Perfluorooctane Sulfonate (PFOS) in treated tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies.

StateWater Suppliers with Perfluorooctane Sulfonate (PFOS) contamination
SystemsPopulation
Minnesota128,000
Total128,000

The Most Polluted Communities

1 water utilities reported detecting Perfluorooctane Sulfonate (PFOS) in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Perfluorooctane Sulfonate (PFOS) level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Oakdale
Oakdale, MN
28,00040 of 560.15 ppb
(0 to 0.48 ppb)

Testing Summary for Perfluorooctane Sulfonate (PFOS)

Are tests routinely required for Perfluorooctane Sulfonate (PFOS) by federal law?No
Water suppliers reporting tests for Perfluorooctane Sulfonate (PFOS) (2005-2008):24 of 47,576
Average testing rate for water supplier reporting tests (2005-2008):2.1 per year