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PFAS in drinking water: North Dakota

EPA UCMR 5 results for 38 public water systems. 7 had at least one PFAS detected; 0 had a highest single PFOA or PFOS result above 4.0 ppt.

UCMR 5 is a one-time EPA monitoring program, not a compliance determination. The values shown are the highest single sample result at any of the system's sampling points; one result above 4.0 ppt does not mean the system violates the PFAS rule, which is judged on running annual averages under separate compliance monitoring. Results describe the public water system, not an individual home.

Water systemServesPFOA max (ppt)PFOS max (ppt)PFAS detected
Agassiz Water Users District
ND1801056		Grand Forks CountyNDND0
Barnes Rural Water District
ND0201058		Valley CityNDND0
Beach City Of
ND1700059		BeachNDND0
Beulah City Of
ND2900074		BeulahNDND0
Bismarck City Of
ND0800080		BismarckNDND0
Cass Rural Water District Fargo
ND0901483		Cass CountyNDND1
Cass Rural Water District-Phase I
ND0901060		Cass CountyNDND0
Cass Rural Water District-Phase II
ND0901124		Cass CountyNDND0
Central Plains Water District
ND5201309		Wells CountyNDND1
Devils Lake City Of
ND3600231		Devils LakeNDND0
Dickinson City Of
ND4500242		DickinsonNDND0
East Central Regional WD-GF
ND1801062		Grand Forks CountyNDND0
Fargo City Of
ND0900336		FargoNDND0
Grafton City Of
ND5000408		GraftonNDND1
Grand Forks Regional WTP
ND1800410		Grand ForksNDND1
Greater Ramsey Water District
ND3601424		Ramsey CountyNDND0
Grenora City Of
ND5300425		GrenoraNDND0
Jamestown City Of
ND4700498		JamestownNDND0
Larimore City Of
ND1800550		LarimoreNDND0
Lincoln City Of
ND0800570		LincolnNDND0
Mandan City Of
ND3000596		MandanNDND0
Minot City Of
ND5100660		MinotNDND0
Missouri West Water System
ND3001431		Morton CountyNDND0
North Prairie RWD-System 1&2
ND5101125		Ward CountyNDND1
Northeast RWD- North Valley Branch
ND3401128		Pembina CountyNDND0
Northwest Rural Water District, ND
ND5301079		Williams CountyNDND1
Omnd Water Treatment Plant
ND2901491		Mercer CountyNDND0
South Central RWD North Burleigh
ND0801502		Burleigh CountyNDND0
South Central RWD-Emmons
ND1501653		Emmons CountyNDND0
South Central Regional Water District
ND0801154		Burleigh CountyNDND1
Southeast Wud (East)
ND3901068		Abercrombie, WahpetonNDND0
Southwest Water Authority
ND4501434		DickinsonNDND0
Stutsman Rural Water District
ND4701303		Stutsman CountyNDND0
Valley City City Of
ND0200958		Valley CityNDND0
Wahpeton City Of
ND3900973		WahpetonNDND0
Watford City City Of
ND2700990		Watford CityNDND0
West Fargo City Of
ND0900999		West FargoNDND0
Williston City Of
ND5301012		WillistonNDND0

ND = not detected (below the 4 ppt UCMR 5 reporting level). Values are the highest single sample result, not an annual average.

Source: EPA UCMR 5 final occurrence data (EPA page last updated 2026-08-28; samples collected January 2023 – December 2025) ↗.

PFAS disclaimer: PFAS results are copied from EPA's UCMR 5 dataset and describe samples taken at a public water system's entry points between 2023 and 2025, not water at any specific address. Levels may have changed since sampling (for example, after new treatment). “Not detected” means below EPA's UCMR 5 minimum reporting level, not zero. This is not a compliance determination or a water test. Contact your water utility for current information.