PFAS in Delaware tap water

14 of 36 tested systems measured above the federal limit. 17 had a detection of any kind.

Every public water system below was required by the EPA to test for 29 PFAS compounds. Sorted by the highest PFOA or PFOS reading, worst first. Find yours for the full set of readings and what removes them.

Water systemHighest PFOAHighest PFOSFoundAgainst the 4 ppt limit
Georgetown Water Department36 ppt14 ppt11 of 29Above
Newark Water Department, de25.3 ppt7.5 ppt8 of 29Above
Suez Water Delaware24.4 pptnone detected9 of 29Above
Artesian Water Company23.1 ppt6 ppt8 of 29Above
Rehoboth Beach Water Department14.9 ppt6.2 ppt7 of 29Above
Dewey Beach Water Department11 pptnone detected5 of 29Above
Wilmington Water Department9.9 pptnone detected6 of 29Above
Smyrna Water Department9.8 ppt6.7 ppt5 of 29Above
Lewes Board of Public Works6.1 ppt9.5 ppt3 of 29Above
Stage Village MHC7.6 ppt8.5 ppt5 of 29Above
Bethany Bay Pump Districtnone detected6.1 ppt1 of 29Above
Artesian Northern Sussex Regional5.7 pptnone detected4 of 29Above
South Bethanynone detected4.7 ppt1 of 29Above
Rehoboth Pump District4.4 pptnone detected4 of 29Above
Bayside Pump Districtnone detectednone detected3 of 29Within
Bethany Beach Water Departmentnone detectednone detected0 of 29Within
Bridgeville Water Departmentnone detectednone detected0 of 29Within
Camden Pump Districtnone detectednone detected0 of 29Within
Camden Wyoming Sewer and Water Authoritynone detectednone detected0 of 29Within
Church Creeknone detectednone detected0 of 29Within
Delmar Utility Comm (tn of Delmar)none detectednone detected0 of 29Within
Dover Air Force Basenone detectednone detected0 of 29Within
Dover Water Departmentnone detectednone detected0 of 29Within
East Ncc Districtnone detectednone detected0 of 29Within
Garrison Lake Pump Districtnone detectednone detected0 of 29Within
Laurel Water Departmentnone detectednone detected0 of 29Within
Long Neck Water Companynone detectednone detected0 of 29Within
Meadows Pump Districtnone detectednone detected0 of 29Within
Middletown Water Department, denone detectednone detected0 of 29Within
Milford Water Departmentnone detectednone detected0 of 29Within
Millsboro Water Departmentnone detectednone detected0 of 29Within
Municipal Services Commissionnone detectednone detected2 of 29Within
North West Pump Districtnone detectednone detected0 of 29Within
Seaford Water Departmentnone detectednone detected2 of 29Within
Sussex Shores Water Companynone detectednone detected0 of 29Within
Swann Keysnone detectednone detected0 of 29Within

All 36 systems the EPA tested in Delaware, every one of them with its own page. Each was tested for 29 PFAS compounds.

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Source, the EPA’s fifth Unregulated Contaminant Monitoring Rule, final dataset published 2026-10-15. Original data →