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Iowa Tap Water Quality

EPA water quality data for 150 community water systems serving 487,254+ people in Iowa. Click any system to see violations, lead testing results, and a safety grade.

WATERLOO WATER WORKS WATERLOO, IA · 69,504 people · Groundwater CEDAR FALLS MUNICIPAL WATER UTILITIES CEDAR FALLS, IA · 40,713 people · Groundwater IA REGIONAL UTILITIES ASSOC (WAVERLY) NEWTON, IA · 37,820 people · Groundwater RATHBUN REGIONAL WATER ASSN (RATHBUN) CENTERVILLE, IA · 33,000 people · Surface Water MASON CITY WATER DEPARTMENT MASON CITY, IA · 27,338 people · Groundwater BOONE WATER WORKS BOONE, IA · 12,704 people · GWUDI RATHBUN REG WATER ASSN (FT MADISON) CENTERVILLE, IA · 11,840 people · Surface Water Purchased STORM LAKE WATER TREATMENT PLANT STORM LAKE, IA · 11,431 people · Groundwater SPENCER MUNICIPAL WATER UTILITY SPENCER, IA · 11,325 people · Groundwater WAVERLY WATER DEPARTMENT WAVERLY, IA · 10,394 people · Groundwater CARROLL MUNICIPAL WATER SUPPLY CARROLL, IA · 10,184 people · Groundwater RATHBUN REG WTR ASSN (BURLINGTON) CENTERVILLE, IA · 8,375 people · Surface Water Purchased CLEAR LAKE WATER DEPARTMENT CLEAR LAKE, IA · 7,687 people · Groundwater ATLANTIC MUNICIPAL UTILITIES ATLANTIC, IA · 7,252 people · Groundwater IOWA LAKES REGIONAL WATER SPENCER, IA · 6,755 people · Groundwater INDEPENDENCE WATER DEPT INDEPENDENCE, IA · 6,064 people · Groundwater OSCEOLA WATER WORKS OSCEOLA, IA · 5,503 people · Surface Water CENTERVILLE MUNICIPAL WATERWORKS CENTERVILLE, IA · 5,344 people · Surface Water Purchased CHEROKEE WATER SUPPLY - PLANT 1 CHEROKEE, IA · 5,199 people · Groundwater XENIA RWD (BOONE) BOUTON, IA · 4,975 people VINTON MUNICIPAL WATER DEPT VINTON, IA · 4,938 people · Groundwater EVANSDALE WATER WORKS EVANSDALE, IA · 4,561 people · Groundwater SIRWA #3 (OSCEOLA) CRESTON, IA · 4,080 people · Surface Water Purchased WAUKON WATER DEPARTMENT WAUKON, IA · 3,827 people · Groundwater WEST CENTRAL RWA - NISH SYSTEM MANNING, IA · 3,573 people · Groundwater NEW HAMPTON WATER SUPPLY NEW HAMPTON, IA · 3,494 people · Groundwater CHEROKEE RWS - CHEROKEE SUBSYSTEM CHEROKEE, IA · 3,315 people · Groundwater TIPTON WATER SUPPLY TIPTON, IA · 3,149 people · Groundwater MADRID WATER DEPARTMENT MADRID, IA · 3,090 people · GWUDI SIRWA - CORNING CRESTON, IA · 2,585 people · Surface Water Purchased HUDSON WATER SUPPLY HUDSON, IA · 2,546 people · Groundwater Purchased POSTVILLE WATER DEPARTMENT POSTVILLE, IA · 2,513 people · Groundwater WEST BRANCH WATER WORKS WEST BRANCH, IA · 2,509 people · Groundwater JESUP MUNICIPAL WATER SUPPLY JESUP, IA · 2,508 people · Groundwater OGDEN MUNICIPAL UTILITIES OGDEN, IA · 2,419 people · Groundwater BELLE PLAINE WATER DEPT BELLE PLAINE, IA · 2,380 people · Groundwater LA PORTE CITY UTILITIES LAPORTE CITY, IA · 2,284 people · Groundwater ROCKWELL CITY WATER SUPPLY ROCKWELL CITY, IA · 2,250 people · Groundwater GREENFIELD MUNICIPAL UTILITIES GREENFIELD, IA · 2,227 people · Surface Water ALTA MUNICIPAL WATER PLANT ALTA, IA · 2,087 people · Groundwater ATKINS MUNICIPAL WATER WORKS ATKINS, IA · 2,056 people · Groundwater AUDUBON WATER SUPPLY AUDUBON, IA · 2,053 people · Groundwater SUMNER WATER SUPPLY SUMNER, IA · 2,030 people · Groundwater PARKERSBURG WATER SUPPLY PARKERSBURG, IA · 2,019 people · Groundwater DENVER WATER SUPPLY DENVER, IA · 1,919 people · Groundwater DURANT WATER SUPPLY DURANT, IA · 1,871 people · Groundwater GUTTENBERG WATER UTILITY GUTTENBERG, IA · 1,817 people · Groundwater STUART WATER SUPPLY STUART, IA · 1,814 people · Surface Water Purchased CORNING MUNI WATER DEPARTMENT CORNING, IA · 1,735 people · Surface Water LAKE CITY WATER SUPPLY LAKE CITY, IA · 1,731 people · Groundwater WEST CENTRAL RWA-BOYER SYSTEM MANNING, IA · 1,715 people · Groundwater SIRWA #1 (GREENFIELD) CRESTON, IA · 1,712 people · Surface Water Purchased MANSON WATER SUPPLY MANSON, IA · 1,709 people · Groundwater XENIA RWD (MADRID) BOUTON, IA · 1,635 people URBANA WATER SUPPLY URBANA, IA · 1,554 people · Groundwater NASHUA WATER SUPPLY NASHUA, IA · 1,551 people · Groundwater MONONA MUNICIPAL WATER DEPT MONONA, IA · 1,471 people · Groundwater CHEROKEE RWS- MILL CREEK SUBSYSTEM CHEROKEE, IA · 1,451 people · Groundwater MANNING WATER SUPPLY MANNING, IA · 1,392 people · Groundwater COON RAPIDS MUNICIPAL UTILITIES COON RAPIDS, IA · 1,300 people · Groundwater SHELL ROCK MUNI WATER SUPP SHELL ROCK, IA · 1,269 people · Groundwater CLARKSVILLE WATER SUPPLY MARSHALLTOWN, IA · 1,254 people · Groundwater ELKADER MUNI WATER DEPT ELKADER, IA · 1,219 people · Groundwater TRIPOLI WATER SUPPLY TRIPOLI, IA · 1,191 people · Groundwater STRAWBERRY POINT WATER SUPPLY STRAWBERRY POINT, IA · 1,155 people · Groundwater GLIDDEN WATER SUPPLY GLIDDEN, IA · 1,151 people · Groundwater APLINGTON WATER SUPPLY APLINGTON, IA · 1,126 people · Groundwater FAIRBANK WATER SUPPLY FAIRBANK, IA · 1,111 people · Groundwater Purchased MARCUS WATER SUPPLY MARCUS, IA · 1,079 people · Groundwater ROCKWELL WATER SUPPLY ROCKWELL, IA · 1,071 people · Groundwater ELK RUN HEIGHTS WATER SUPPLY ELK RUN HEIGHTS, IA · 1,069 people · Groundwater Purchased CLARENCE WATER SUPPLY MECHANICSVILLE, IA · 1,039 people · Groundwater JANESVILLE WATER SUPPLY JANESVILLE, IA · 1,034 people · Groundwater Purchased MECHANICSVILLE WATER DEPT MECHANICSVILLE, IA · 1,020 people · Groundwater GRISWOLD WATER SUPPLY GRISWOLD, IA · 1,008 people · Groundwater GREENE MUNI WATER SUPPLY GREENE, IA · 994 people · Groundwater FREDERICKSBURG WATER SUPPLY FREDERICKSBURG, IA · 987 people · Groundwater LANSING WATER SUPPLY LANSING, IA · 983 people · Groundwater ANITA MUNICIPAL UTILITIES ANITA, IA · 972 people · Groundwater AURELIA WATER SUPPLY AURELIA, IA · 968 people · Groundwater ALLISON WATER SUPPLY ALLISON, IA · 966 people · Groundwater SHELLSBURG WATER SUPPLY SHELLSBURG, IA · 961 people · Groundwater EDGEWOOD WATER SUPPLY EDGEWOOD, IA · 939 people · Groundwater SIOUX RAPIDS WATER DEPARTMENT SIOUX RAPIDS, IA · 920 people · Groundwater NEWELL WATER TREATMENT PLANT NEWELL, IA · 906 people · Groundwater NEWHALL WATER SUPPLY VAN HORNE, IA · 881 people · Groundwater READLYN WATER SUPPLY READLYN, IA · 845 people · Groundwater DUNKERTON MUNI WATER SUPPLY DUNKERTON, IA · 842 people · Groundwater WINTHROP WATER SUPPLY WINTHROP, IA · 840 people · Groundwater ADAIR MUNICIPAL WATER SUPPLY ADAIR, IA · 809 people · Groundwater LOWDEN WATER SUPPLY LOWDEN, IA · 807 people · Groundwater GILBERTVILLE WATER WORKS GILBERTVILLE, IA · 794 people · Groundwater VAN HORNE WATER WORKS VAN HORNE, IA · 779 people EXIRA WATER DEPT EXIRA, IA · 764 people · Groundwater Purchased GARNAVILLO WATER SUPPLY GARNAVILLO, IA · 763 people · Groundwater MCGREGOR WATER DEPT MCGREGOR, IA · 747 people · Groundwater BLAIRSTOWN WATER SUPPLY BLAIRSTOWN, IA · 738 people · Groundwater VENTURA WATER WORKS VENTURA, IA · 716 people · Groundwater HAZLETON WATER SUPPLY JESUP, IA · 713 people · Groundwater WOODWARD RESOURCE CENTER WOODWARD, IA · 700 people · Surface Water Purchased LAKESIDE WATER SUPPLY LAKESIDE, IA · 700 people · Groundwater Purchased MURRAY WATER WORKS MURRAY, IA · 684 people · Surface Water Purchased ALBERT CITY MUNI WATER SUPPLY STORM LAKE, IA · 677 people · Groundwater POMEROY WATER SUPPLY POMEROY, IA · 671 people · Groundwater FONTANELLE WATER WORKS FONTANELLE, IA · 670 people · Surface Water Purchased MORAVIA PUBLIC WATER SUPPLY MORAVIA, IA · 637 people · Surface Water Purchased STANWOOD WATER SUPPLY STANWOOD, IA · 637 people · Groundwater DUMONT WATER SUPPLY MARSHALLTOWN, IA · 635 people · Groundwater MOULTON WATER DEPARTMENT MOULTON, IA · 607 people · Surface Water Purchased KEYSTONE WATER SUPPLY KEYSTONE, IA · 599 people · Groundwater EVERLY WATER SUPPLY EVERLY, IA · 575 people · Groundwater NEW HARTFORD WATER SUPPLY MARSHALLTOWN, IA · 570 people · Groundwater ARCADIA WATER SUPPLY ARCADIA, IA · 525 people · Groundwater Purchased BREDA WATER SUPPLY BREDA, IA · 500 people · Groundwater NORWAY CITY WATER SUPPLY NORWAY, IA · 466 people NEW ALBIN WATER SUPPLY NEW ALBIN, IA · 432 people · Groundwater LAMONT WATER SUPPLY LAMONT, IA · 429 people · Groundwater MARQUETTE WATER SUPPLY MARQUETTE, IA · 429 people · Groundwater CLOVER RIDGE SUBDIVISION WALFORD, IA · 413 people · Groundwater LAWLER WATER SUPPLY LAWLER, IA · 406 people · Groundwater WEST BRANCH MHP OXFORD, IA · 400 people · Groundwater Purchased THORNTON WATER SUPPLY BELMOND, IA · 400 people · Groundwater PLAINFIELD WATER SUPPLY PLAINFIELD, IA · 393 people · Groundwater CEDAR FALLS MOBILE HOME VILLAGE WATERLOO, IA · 388 people · Groundwater LOHRVILLE WATER SUPPLY NEWELL, IA · 381 people · Groundwater FARNHAMVILLE WATER SUPPLY GILMORE CITY, IA · 379 people · Groundwater PLYMOUTH WATER SUPPLY PLYMOUTH, IA · 378 people · Groundwater ORIENT MUNICIPAL WATER SUPPLY ORIENT, IA · 368 people · Surface Water Purchased MASSENA WATER SUPPLY MASSENA, IA · 364 people · Groundwater LEWIS WATER SUPPLY LEWIS, IA · 357 people · Groundwater CALAMUS WATER SUPPLY CALAMUS, IA · 356 people · Groundwater TEMPLETON WATER SUPPLY TEMPLETON, IA · 352 people · Groundwater Purchased BENNETT WATERWORKS LOWDEN, IA · 347 people · Groundwater GARRISON WATER SUPPLY TRAER, IA · 344 people · Groundwater BRANDON WATER SUPPLY BRANDON, IA · 341 people · Groundwater MYSTIC WATER SUPPLY MYSTIC, IA · 322 people · Surface Water Purchased PETERSON MUNICIPAL WATER SUPPLY PETERSON, IA · 322 people · Groundwater LUANA WATER WORKS LUANA, IA · 301 people · Groundwater TWIN LAKES UTILITIES ROCKWELL CITY, IA · 300 people · Groundwater Purchased CINCINNATI MUNICIPAL WATER CO CINCINNATI, IA · 290 people · Surface Water Purchased KIMBALLTON UTILITIES KIMBALLTON, IA · 287 people · Groundwater FARMERSBURG WATERWORKS MONONA, IA · 276 people · Groundwater CUMBERLAND WATER SUPPLY CUMBERLAND, IA · 266 people · Groundwater QUIMBY WATER SUPPLY QUIMBY, IA · 249 people · Groundwater HALBUR WATER SUPPLY HALBUR, IA · 243 people · Groundwater Purchased COAL VALLEY WATER DISTRICT OGDEN, IA · 240 people · Groundwater Purchased CLEGHORN WATER SUPPLY STORM LAKE, IA · 240 people · Groundwater LENWOOD UTILITIES CEDAR FALLS, IA · 238 people · Groundwater FOSTORIA MUNICIPAL WATER SUPPLY SPENCER, IA · 233 people · Groundwater Purchased MARATHON LIGHT & WATER DEPARTMENT MARATHON, IA · 230 people · Groundwater