U.S. water systems

South Dakota Water Systems

South Dakota

762 community water systems on record — 463 active, 299 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace South Dakota’s official records. Always confirm current status with South Dakota before making decisions based on this information.

Counties in South Dakota

Aurora County (6)Beadle County (14)Bennett County (1)Bon Homme County (8)Brookings County (21)Brown County (26)Brule County (5)Buffalo County (5)Butte County (16)Campbell County (4)Charles Mix County (17)Clark County (12)Clay County (4)Codington County (13)Corson County (3)Custer County (17)Davison County (9)Day County (13)Deuel County (6)Dewey County (11)Douglas County (8)Edmunds County (10)Fall River County (16)Faulk County (13)Grant County (10)Gregory County (8)Haakon County (4)Hamlin County (11)Hand County (7)Hanson County (6)Harding County (1)Hughes County (14)Hutchinson County (10)Hyde County (2)Jackson County (6)Jerauld County (5)Jones County (4)Kingsbury County (10)Lake County (9)Lawrence County (53)Lincoln County (14)Lyman County (10)Marshall County (13)McCook County (10)McPherson County (7)Meade County (54)Mellette County (5)Miner County (5)Minnehaha County (27)Moody County (7)Pennington County (92)Perkins County (3)Potter County (4)Roberts County (18)Sanborn County (5)Shannon County (17)Spink County (17)Stanley County (5)Sully County (3)Todd County (16)Tripp County (4)Turner County (12)Union County (17)Walworth County (5)Yankton County (22)Ziebach County (2)

All community water systems in South Dakota

System name	Mailing city	Population served	Status
SIOUX FALLS	SIOUX FALLS	216,462	Active
RAPID CITY	RAPID CITY	72,009	Active
ABERDEEN	ABERDEEN	27,989	Active
BROOKINGS MUNICIPAL UTILITIES	BROOKINGS	23,377	Active
WATERTOWN MUNICIPAL UTILITIES	WATERTOWN	23,230	Active
WEB WATER DEVELOPMENT ASSOCIATION	ABERDEEN	20,750	Active
MITCHELL	MITCHELL	15,651	Active
YANKTON	YANKTON	15,411	Active
HURON	HURON	14,263	Active
PIERRE	PIERRE	14,091	Active
BOX ELDER	BOX ELDER	14,000	Active
SPEARFISH	SPEARFISH	13,803	Active
MINNEHAHA COMMUNITY WATER CORP	DELL RAPIDS	13,435	Active
BY WATER DISTRICT	TABOR	13,320	Active
MID-DAKOTA RURAL WATER	MILLER	11,833	Active
VERMILLION	VERMILLION	11,695	Active
RAPID VALLEY SANITARY DISTRICT	RAPID CITY	11,408	Active
BRANDON	BRANDON	11,048	Active
HARRISBURG	HARRISBURG	10,297	Active
ELLSWORTH AFB	ELLSWORTH AFB	9,100	Active
TEA	TEA	7,381	Active
STURGIS	STURGIS	7,020	Active
ELLSWORTH AIR FORCE BASE	ELLSWORTH AFB	6,700	Inactive
KINGBROOK I RURAL WATER SYSTEM	ARLINGTON	6,455	Active
RANDALL COMMUNITY WATER DISTRICT	LAKE ANDES	6,248	Active
BROOKINGS-DEUEL RURAL WATER SYSTEM	TORONTO	6,200	Active
MADISON	MADISON	6,191	Active
LINCOLN COUNTY RURAL WATER SYSTEM	SIOUX FALLS	5,965	Active
BIG SIOUX COMMUNITY WATER SYSTEM	EGAN	5,800	Active
BON HOMME-YANKTON I RWS	TABOR	5,790	Inactive
BROWN-DAY-MARSHALL RWS	BRITTON	5,673	Active
BELLE FOURCHE	BELLE FOURCHE	5,617	Active
RANDALL COMM WATER DIST PH 2	LAKE ANDES	5,400	Inactive
SOUTH LINCOLN RURAL WATER SYSTEM	BERESFORD	5,250	Active
GRANT-ROBERTS RURAL WATER SYSTEM	MILBANK	5,050	Active
TRIPP COUNTY WATER USER DISTRICT	WINNER	4,860	Active
CLAY RURAL WATER SYSTEM	WAKONDA	4,780	Active
WR/LJ - MNI WICONI	MURDO	4,720	Active
BLACK HAWK WATER USER DISTRICT	BLACK HAWK	4,500	Active
SIOUX RURAL WATER SYSTEM	WATERTOWN	4,280	Active
TM RURAL WATER DISTRICT	PARKER	4,250	Active
OST SANITATION AND MAINTENANCE	PINE RIDGE	4,200	Inactive
EAGLE BUTTE	EAGLE BUTTE	4,000	Active
DAKOTA DUNES CID	DAKOTA DUNES	3,700	Active
DELL RAPIDS	DELL RAPIDS	3,633	Active
MILBANK	MILBANK	3,544	Active
DAVISON RURAL WATER SYSTEM INC	MITCHELL	3,485	Active
HARTFORD	HARTFORD	3,396	Active
HOT SPRINGS	HOT SPRINGS	3,395	Active
MOBRIDGE	MOBRIDGE	3,261	Active
CANTON	CANTON	3,066	Active
NORTH SIOUX CITY	NORTH SIOUX CITY	3,042	Active
LEAD	LEAD	2,982	Active
WINNER	WINNER	2,921	Active
KINGBROOK III RURAL WATER SYSTEM	ARLINGTON	2,888	Active
AURORA-BRULE RURAL WATER SYSTEM	KIMBALL	2,750	Active
KINGBROOK II RURAL WATER SYSTEM	ARLINGTON	2,715	Active
HANSON RURAL WATER SYSTEM	EMERY	2,685	Active
LENNOX	LENNOX	2,571	Active
WR/LJ - NORTH STANLEY COUNTY	MURDO	2,492	Active
SISSETON	SISSETON	2,479	Active
CHAMBERLAIN	CHAMBERLAIN	2,473	Active
FLANDREAU	FLANDREAU	2,372	Active
BERESFORD	BERESFORD	2,359	Active
VOLGA	VOLGA	2,340	Active
CLARK RURAL WATER SYSTEM	CLARK	2,325	Active
FORT PIERRE	FORT PIERRE	2,236	Active
WEBSTER WATER DEPT	WEBSTER	2,236	Inactive
REDFIELD	REDFIELD	2,214	Active
TRI-COUNTY RURAL WATER SYSTEM	EAGLE BUTTE	2,190	Active
ELK POINT	ELK POINT	2,124	Active
SPRINGFIELD	SPRINGFIELD	2,108	Active
RANDALL III RURAL WATER SYSTEM	LAKE ANDES	2,000	Inactive
CUSTER	CUSTER	1,919	Active
ROSEBUD UTILITIES COMMISSION	ROSEBUD	1,745	Inactive
WEBSTER	WEBSTER	1,728	Active
PARKSTON	PARKSTON	1,567	Active
MARTIN	MARTIN	1,500	Active
WAGNER	WAGNER	1,490	Active
BUTTE-MEADE SWD-BEAN WELL	NEWELL	1,481	Active
CLAY RWS/SOUTH UNION	WAKONDA	1,447	Active
GROTON	GROTON	1,380	Active
CROOKS	CROOKS	1,362	Active
MILLER	MILLER	1,349	Active
FREEMAN	FREEMAN	1,329	Active
SALEM	SALEM	1,325	Active
NORTH SIOUX CITY - MCCOOK LAKE SYSTE	MCCOOK LAKE	1,300	Inactive
BALTIC	BALTIC	1,271	Active
PLATTE	PLATTE	1,256	Active
LAKOTA TECH HIGH SCHOOL	BATESLAND	1,250	Active
GARRETSON	GARRETSON	1,228	Active
GREGORY	GREGORY	1,221	Active
CLEAR LAKE	CLEAR LAKE	1,218	Active
BRITTON	BRITTON	1,215	Active
AURORA	AURORA	1,200	Active
CHAPEL LANE WATER COMPANY	RAPID CITY	1,200	Active
COLONIAL PINE HILLS SANITARY DISTRIC	RAPID CITY	1,200	Active
WR/LJ - CREIGHTON PROJECT	PHILIP	1,170	Active
GETTYSBURG	GETTYSBURG	1,162	Active
DEADWOOD	DEADWOOD	1,156	Active
LEMMON	LEMMON	1,156	Active
CLARK	CLARK	1,148	Active
SIOUX I RURAL WATER SYSTEM (SIOUX)	WATERTOWN	1,125	Inactive
NORTHDALE SANITARY DISTRICT	PIEDMONT	1,075	Active
FALL RIVER WUD	ORAL	1,057	Active
DE SMET	DE SMET	1,056	Active
PARKER	PARKER	1,025	Active
LOWER BRULE TRIBAL OFFICE	LOWER BRULE	1,020	Inactive
TYNDALL	TYNDALL	1,012	Active
CROW CREEK WATER COMMISSION	FORT THOMPSON	1,000	Inactive
SAINT FRANCIS	ST. FRANCIS	1,000	Inactive
PIEDMONT	PIEDMONT	971	Active
SOUTHERN BLACK HILLS WATER	HOT SPRINGS	947	Active
WORTHING	WORTHING	939	Active
ST FRANCIS WATER AUTHORITY	ROSEBUD	935	Inactive
IPSWICH	IPSWICH	928	Active
VALLEY SPRINGS	VALLEY SPRINGS	925	Active
CENTERVILLE	CENTERVILLE	918	Active
ARLINGTON	ARLINGTON	915	Active
MISSION	MISSION	904	Inactive
WESSINGTON SPRINGS	WESSINGTON SPRINGS	895	Active
MARION	MARION	894	Active
BEAR BUTTE VALLEY WATER	STURGIS	882	Active
WHITEWOOD	WHITEWOOD	879	Active
HILL CITY	HILL CITY	872	Active
MINA LAKE SANITARY DISTRICT	ABERDEEN	863	Active
HOWARD	HOWARD	848	Active
ALCESTER	ALCESTER	820	Active
VIBORG	VIBORG	814	Active
EUREKA	EUREKA	813	Active
FORT MEADE VA CENTER	FORT MEADE	800	Active
RANDALL COMM WATER DIST PH 1	LAKE ANDES	800	Inactive
SCOTLAND	SCOTLAND	785	Active
PLANKINTON	PLANKINTON	782	Active
PHILIP	PHILIP	759	Active
ELKTON	ELKTON	755	Active
SD DEVELOPMENT CENTER-REDFIELD	REDFIELD	750	Inactive
WONDERLAND HOMES	RAPID CITY	750	Active
ESTELLINE	ESTELLINE	749	Active
COLTON	COLTON	738	Active
WHITEWOOD, TOWN OF	WHITEWOOD	732	Inactive
EDGEMONT	EDGEMONT	725	Active
LAKE ANDES	LAKE ANDES	710	Active
WALL	WALL	699	Active
ARMOUR	ARMOUR	698	Active
CASTLEWOOD	CASTLEWOOD	698	Active
FAULKTON	FAULKTON	693	Active
HIGHMORE	HIGHMORE	682	Active
NEW UNDERWOOD	NEW UNDERWOOD	679	Active
ONIDA	ONIDA	658	Active
SUN VALLEY DEVELOPMENT	RAPID CITY	650	Active
ALEXANDRIA	ALEXANDRIA	649	Active
SELBY	SELBY	645	Active
CANISTOTA	CANISTOTA	642	Active
COLMAN	COLMAN	634	Active
WOONSOCKET	WOONSOCKET	618	Active
MENNO	MENNO	614	Active
CLARK RURAL WATER-KAMPESKA	CLARK	602	Active
AVON	AVON	590	Active
LAKE PRESTON	LAKE PRESTON	589	Active
NEWELL	NEWELL	583	Active
HUMBOLDT	HUMBOLDT	579	Active
CPH - COUNTRYSIDE SOUTH	RAPID CITY	576	Inactive
BURKE	BURKE	575	Active
TRIPP	TRIPP	575	Active
KIMBALL	KIMBALL	572	Active
MCLAUGHLIN	MCLAUGHLIN	569	Active
CORSICA	CORSICA	561	Active
LAKE NORDEN	LAKE NORDEN	554	Active
KADOKA	KADOKA	543	Active
WHITE RIVER	WHITE RIVER	533	Active
DUPREE	DUPREE	525	Active
BRIDGEWATER	BRIDGEWATER	511	Active
TIMBER LAKE	TIMBER LAKE	499	Active
WHITE	WHITE	499	Active
COUNTRYSIDE	RAPID CITY	492	Inactive
HISEGA MEADOWS WATER INC	RAPID CITY	491	Active
WARNER	WARNER	485	Active
EMERY	EMERY	480	Active
HOLIDAY PARK	SIOUX FALLS	480	Inactive
JEFFERSON	JEFFERSON	475	Active
MURDO	MURDO	475	Active
WAUBAY	WAUBAY	473	Active
PRESHO	PRESHO	472	Active
BRYANT	BRYANT	471	Active
WR/LJ - LOWER BRULE	MURDO	471	Inactive
BOWDLE	BOWDLE	470	Active
PERKINS COUNTY RURAL WATER	BISON	470	Active
MONTROSE	MONTROSE	468	Active
OST SANITATION AND MAINTENANCE	PINE RIDGE	468	Inactive
SPRING CREEK SANITARY DISTRICT	PIERRE	465	Active
MOUNT VERNON	MOUNT VERNON	461	Active
LAKESIDE ESTATES	ABERDEEN	460	Active
WOLSEY	WOLSEY	459	Active
HOT SPRINGS VA CENTER	HOT SPRINGS	445	Active
OST SANITATION AND MAINTENANCE	PINE RIDGE	440	Inactive
HART RANCH	RAPID CITY	438	Active
LEOLA	LEOLA	434	Active
WILMOT	WILMOT	432	Active
PINE GROVE	RAPID CITY	425	Active

Showing the 200 largest of 762 systems on record, by population served. Browse by county above for the full list — every system has its own page, and all of them are in the sitemap.