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North Dakota Tap Water Quality

EPA water quality data for 150 community water systems serving 468,129+ people in North Dakota. Click any system to see violations, lead testing results, and a safety grade.

FARGO CITY OF FARGO, ND · 120,762 people · Surface Water BISMARCK CITY OF BISMARCK, ND · 72,417 people · GWUDI GRAND FORKS REGIONAL WTP GRAND FORKS, ND · 57,339 people · Surface Water WEST FARGO CITY OF WEST FARGO, ND · 34,858 people · Surface Water Purchased MANDAN CITY OF MANDAN, ND · 21,769 people · Surface Water SOUTH CENTRAL RWD NORTH BURLEIGH BISMARCK, ND · 10,400 people · GWUDI VALLEY CITY CITY OF VALLEY CITY, ND · 6,585 people · Surface Water WATFORD CITY CITY OF WATFORD CITY, ND · 6,390 people · Surface Water Purchased EAST CENTRAL REGIONAL WD-GF THOMPSON, ND · 5,995 people · Groundwater BARNES RURAL WATER DISTRICT VALLEY CITY, ND · 4,938 people · Groundwater MISSOURI WEST WATER SYSTEM MANDAN, ND · 4,303 people · Surface Water Purchased LINCOLN CITY OF LINCOLN, ND · 4,257 people CASS RURAL WATER DISTRICT FARGO KINDRED, ND · 4,242 people · Surface Water Purchased OMND WATER TREATMENT PLANT DICKINSON, ND · 4,168 people · Surface Water MCKENZIE COUNTY WRD WATFORD CITY, ND · 3,895 people · Surface Water Purchased SOUTH CENTRAL REGIONAL WATER DISTRICT BISMARCK, ND · 3,700 people CASS RURAL WATER DISTRICT-PHASE I KINDRED, ND · 3,658 people · Groundwater SOUTH CENTRAL RWD-EMMONS BISMARCK, ND · 3,650 people · Surface Water AGASSIZ WATER USERS DISTRICT GILBY, ND · 3,438 people · Groundwater BEULAH CITY OF BEULAH, ND · 3,058 people · Groundwater CASSELTON CITY OF CASSELTON, ND · 2,513 people · Groundwater Purchased TRI-COUNTY WATER DISTRICT PETERSBURG, ND · 2,501 people · Groundwater NORTHEAST RWD-LANGDON BRANCH CAVALIER, ND · 2,450 people · Groundwater Purchased HAZEN CITY OF HAZEN, ND · 2,411 people · Surface Water Purchased BOTTINEAU CITY OF BOTTINEAU, ND · 2,211 people · Groundwater Purchased CARRINGTON CITY OF CARRINGTON, ND · 2,065 people · Groundwater LANGDON CITY OF LANGDON, ND · 1,878 people · Groundwater Purchased OAKES CITY OF OAKES, ND · 1,856 people · Groundwater GARRISON RURAL WATER DISTRICT GARRISON, ND · 1,805 people · Surface Water Purchased MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 1 TURTLE LAKE, ND · 1,800 people · Groundwater CASS RURAL WATER DISTRICT-PHASE II KINDRED, ND · 1,700 people · Groundwater CASS RURAL WATER DISTRICT-PHASE III KINDRED, ND · 1,682 people · Groundwater HORACE CITY OF HORACE, ND · 1,641 people · Surface Water Purchased BOWMAN CITY OF BOWMAN, ND · 1,470 people · Groundwater GARRISON CITY OF GARRISON, ND · 1,453 people · Surface Water CROSBY CITY OF CROSBY, ND · 1,406 people · Surface Water Purchased ELLENDALE CITY OF ELLENDALE, ND · 1,394 people · Groundwater Purchased NEW ROCKFORD CITY OF NEW ROCKFORD, ND · 1,391 people · Groundwater LARIMORE CITY OF LARIMORE, ND · 1,346 people · Groundwater Purchased ALEXANDER CITY OF ALEXANDER, ND · 1,335 people · Groundwater MAPLETON CITY OF MAPLETON, ND · 1,320 people · Groundwater Purchased CAVALIER CITY OF CAVALIER, ND · 1,302 people · Groundwater Purchased SOUTHEAST WUD (WEST) FULLERTON, ND · 1,275 people · Groundwater WASHBURN CITY OF WASHBURN, ND · 1,246 people · Surface Water HETTINGER CITY OF HETTINGER, ND · 1,226 people · Surface Water Purchased STANLEY CITY OF STANLEY, ND · 1,138 people · Surface Water Purchased DAKOTA RURAL WATER DISTRICT SOUTH FINLEY, ND · 1,135 people · Groundwater LINTON CITY OF LINTON, ND · 1,097 people · Surface Water Purchased VELVA CITY OF VELVA, ND · 1,084 people · Groundwater DAKOTA RURAL WATER DISTRICT NORTH FINLEY, ND · 1,070 people · Groundwater WALHALLA CITY OF WALHALLA, ND · 996 people · Groundwater Purchased COOPERSTOWN CITY OF COOPERSTOWN, ND · 984 people · Groundwater BEACH CITY OF BEACH, ND · 981 people · Surface Water Purchased WISHEK CITY OF WISHEK, ND · 952 people · Groundwater NEW SALEM CITY OF NEW SALEM, ND · 946 people · Surface Water Purchased NORTHWOOD CITY OF NORTHWOOD, ND · 945 people · Groundwater Purchased KILLDEER CITY OF KILLDEER, ND · 939 people · Surface Water Purchased ALL SEASONS WD-SYSTEM I BOTTINEAU, ND · 890 people · Groundwater LAMOURE CITY OF LAMOURE, ND · 889 people · Groundwater Purchased DRAYTON CITY OF DRAYTON, ND · 824 people · Groundwater Purchased GLEN ULLIN CITY OF GLEN ULLIN, ND · 807 people · Surface Water Purchased NAPOLEON CITY OF NAPOLEON, ND · 792 people · Groundwater ALL SEASONS WD-SYSTEM III BOTTINEAU, ND · 790 people · Groundwater Purchased UNDERWOOD CITY OF UNDERWOOD, ND · 778 people · Surface Water Purchased ASHLEY CITY OF ASHLEY, ND · 749 people · Surface Water Purchased HEBRON CITY OF HEBRON, ND · 747 people · Surface Water Purchased MOTT CITY OF MOTT, ND · 721 people · Surface Water Purchased HARWOOD CITY OF HARWOOD, ND · 718 people · Groundwater STEELE CITY OF STEELE, ND · 715 people · Groundwater WILTON CITY OF WILTON, ND · 711 people KINDRED CITY OF KINDRED, ND · 692 people · Groundwater Purchased LAKOTA CITY OF LAKOTA, ND · 672 people · Groundwater ELGIN CITY OF ELGIN, ND · 642 people · Surface Water Purchased NEW ENGLAND CITY OF NEW ENGLAND, ND · 600 people · Surface Water Purchased PEMBINA CITY OF PEMBINA, ND · 592 people · Groundwater Purchased CENTER CITY OF CENTER, ND · 588 people · Surface Water Purchased TURTLE LAKE CITY OF TURTLE LAKE, ND · 581 people · Groundwater Purchased EDGELEY CITY OF EDGELEY, ND · 563 people · Groundwater Purchased TOWNER CITY OF TOWNER, ND · 479 people · Groundwater ARGUSVILLE CITY OF ARGUSVILLE, ND · 475 people · Groundwater Purchased GREATER RAMSEY WD - CARRINGTON DEVILS LAKE, ND · 455 people · Groundwater Purchased WESTHOPE CITY OF WESTHOPE, ND · 429 people · Groundwater Purchased LEEDS CITY OF LEEDS, ND · 427 people · Groundwater EMERADO CITY OF EMERADO, ND · 414 people · Groundwater Purchased STRASBURG CITY OF STRASBURG, ND · 409 people · Surface Water Purchased STATE LINE WATER COOP INC BISMARCK, ND · 405 people · Surface Water Purchased MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 3 TURTLE LAKE, ND · 400 people · Surface Water Purchased MCLEAN-SHERIDAN WATER DISTRICT-SYSTEM 2 TURTLE LAKE, ND · 390 people · Surface Water Purchased MADDOCK CITY OF MADDOCK, ND · 382 people · Groundwater NECHE CITY OF NECHE, ND · 371 people · Groundwater Purchased STANTON CITY OF STANTON, ND · 366 people · Surface Water Purchased KULM CITY OF KULM, ND · 354 people · Groundwater Purchased MCVILLE CITY OF MCVILLE, ND · 349 people · Groundwater IMPERIAL VALLEY WATER CO BISMARCK, ND · 345 people ARTHUR CITY OF ARTHUR, ND · 337 people · Groundwater Purchased BOWBELLS CITY OF BOWBELLS, ND · 336 people · Groundwater Purchased MAX CITY OF MAX, ND · 334 people · Groundwater Purchased ST THOMAS CITY OF ST. THOMAS, ND · 331 people · Groundwater Purchased CROWN BUTTE COOP MANDAN, ND · 320 people · Surface Water Purchased GACKLE CITY OF GACKLE, ND · 310 people · Groundwater Purchased OXBOW CITY OF KINDRED, ND · 305 people · Groundwater MICHIGAN CITY OF MICHIGAN, ND · 294 people · Groundwater CARSON CITY OF CARSON, ND · 293 people · Surface Water Purchased SCRANTON CITY OF SCRANTON, ND · 281 people · Surface Water Purchased POWERS LAKE CITY OF POWERS LAKE, ND · 280 people · Groundwater DRAKE CITY OF DRAKE, ND · 275 people · Groundwater HUNTER CITY OF HUNTER, ND · 261 people · Groundwater Purchased TOWER CITY CITY OF VALLEY CITY, ND · 253 people · Groundwater Purchased DAVENPORT CITY OF DAVENPORT, ND · 252 people · Groundwater Purchased LANSFORD CITY OF LANSFORD, ND · 245 people · Groundwater Purchased GRANVILLE CITY OF GRANVILLE, ND · 241 people · Groundwater Purchased ZAP CITY OF ZAP, ND · 237 people · Surface Water Purchased HAZELTON CITY OF HAZELTON, ND · 235 people · Groundwater PAGE CITY OF PAGE, ND · 232 people · Groundwater Purchased FLASHER CITY OF FLASHER, ND · 232 people · Surface Water Purchased MINNEWAUKAN CITY OF MINNEWAUKAN, ND · 224 people · Groundwater ANETA CITY OF ANETA, ND · 222 people · Groundwater Purchased NEW LEIPZIG CITY OF NEW LEIPZIG, ND · 221 people · Surface Water Purchased WIMBLEDON CITY OF VALLEY CITY, ND · 216 people · Groundwater Purchased RIVERDALE CITY OF RIVERDALE, ND · 205 people · Surface Water SHEYENNE CITY OF SHEYENNE, ND · 204 people · Groundwater APPLE VALLEY COOP MENOKEN, ND · 200 people RIVERVIEW HEIGHTS MANDAN, ND · 200 people · Surface Water Purchased SANBORN CITY OF SANBORN, ND · 192 people · Groundwater Purchased BUFFALO CITY OF BUFFALO, ND · 188 people · Groundwater Purchased HALLIDAY CITY OF HALLIDAY, ND · 188 people · Surface Water Purchased BINFORD CITY OF BINFORD, ND · 183 people · Groundwater Purchased GOLDEN VALLEY CITY OF GOLDEN VALLEY, ND · 182 people · Surface Water Purchased ARVILLA WATER USERS ASSOCIATION ARVILLA, ND · 180 people · Groundwater Purchased GRANDIN CITY OF GRANDIN, ND · 173 people · Groundwater Purchased SOUTHWEST WA-JUNCTION INN(MISSOURI WEST) DICKINSON, ND · 173 people · Surface Water Purchased LITCHVILLE CITY OF VALLEY CITY, ND · 172 people · Groundwater Purchased PLAZA CITY OF MINOT, ND · 171 people · Surface Water Purchased RHAME CITY OF RHAME, ND · 169 people · Surface Water Purchased TOLNA CITY OF TOLNA, ND · 166 people · Groundwater Purchased WILLOW CITY CITY OF WILLOW CITY, ND · 163 people · Groundwater Purchased REEDER CITY OF REEDER, ND · 162 people · Surface Water Purchased COUNTRY CLUB CO-OP MANDAN, ND · 162 people REGENT CITY OF REGENT, ND · 160 people · Surface Water Purchased LIGNITE CITY OF LIGNITE, ND · 155 people · Groundwater WING CITY OF WING, ND · 152 people · Groundwater DUNN CENTER CITY OF DUNN CENTER, ND · 146 people · Surface Water Purchased MAPLE RIVER HUTTERIAN ASSOCIATION FULLERTON, ND · 140 people · Groundwater OSNABROCK CITY OF DEVILS LAKE, ND · 134 people · Groundwater Purchased COLUMBUS CITY OF COLUMBUS, ND · 133 people · Surface Water Purchased HANNAFORD CITY OF HANNAFORD, ND · 131 people · Groundwater Purchased UPHAM CITY OF UPHAM, ND · 130 people · Groundwater Purchased PORTAL CITY OF PORTAL, ND · 126 people · Groundwater PICK CITY CITY OF PICK CITY, ND · 123 people · Surface Water Purchased ALMONT CITY OF ALMONT, ND · 122 people · Surface Water Purchased