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SD tap water quality, city by city
231 cities and towns in SD are served by an active community water system in the EPA's records. Each page below translates that system's EPA-reported history into plain English.
According to EPA SDWIS data, retrieved June 2026.
- Aberdeen
- Agency Village
- Alcester
- Alexandria
- Allen
- Arlington
- Armour
- Artesian
- Aurora
- Avon
- Badger
- Baltic
- Batesland
- Bath
- Belle Fourche
- Beresford
- Big Stone City
- Bison
- Black Hawk
- Blackhawk
- Bonesteel
- Bowdle
- Box Elder
- Brandon
- Brentford
- Bridgewater
- Bristol
- Britton
- Brookings
- Bryant
- Buffalo
- Buffalo Gap
- Burke
- Canistota
- Canova
- Canton
- Carpenter
- Castlewood
- Centerville
- Chamberlain
- Chancellor
- Clark
- Clear Lake
- Colman
- Colome
- Colton
- Conde
- Corona
- Corsica
- Cresbard
- Crooks
- Custer
- Dakota Dunes
- Dallas
- De Smet
- Deadwood
- Dell Rapids
- Delmont
- Doland
- Dupree
- Eagle Butte
- Eden
- Edgemont
- Egan
- Elk Point
- Elkton
- Ellsworth Afb
- Emery
- Estelline
- Ethan
- Eureka
- Fairburn
- Faith
- Faulkton
- Flandreau
- Florence
- Fort Meade
- Fort Pierre
- Fort Thompson
- Frankfort
- Frederick
- Freeman
- Fruitdale
- Garden City
- Garretson
- Gary
- Gayville
- Gettysburg
- Gregory
- Grenville
- Groton
- Harrisburg
- Hartford
- Hayti
- Hecla
- Henry
- Hermosa
- Herreid
- Highmore
- Hill City
- Hosmer
- Hot Springs
- Hoven
- Howard
- Hudson
- Humboldt
- Hurley
- Huron
- Ipswich
- Irene
- Iroquois
- Isabel
- Java
- Jefferson
- Kadoka
- Kennebec
- Keystone
- Kimball
- Lake Andes
- Lake Norden
- Lake Preston
- Langford
- Lead
- Lemmon
- Lennox
- Leola
- Lesterville
- Letcher
- Lower Brule
- Madison
- Manderson
- Marion
- Martin
- Mcintosh
- Mclaughlin
- Menno
- Midland
- Milbank
- Miller
- Mission
- Mitchell
- Mobridge
- Montrose
- Morristown
- Mount Vernon
- Murdo
- New Effington
- New Underwood
- Newell
- Nisland
- North Sioux City
- Northville
- Oacoma
- Oelrichs
- Onida
- Oral
- Owanka
- Parker
- Parkston
- Philip
- Pickstown
- Piedmont
- Pierpont
- Pierre
- Pine Ridge
- Plankinton
- Platte
- Pollock
- Presho
- Rapid City
- Redfield
- Roscoe
- Rosebud
- Rosholt
- Roslyn
- Salem
- Scotland
- Selby
- Seneca
- Sioux Falls
- Sisseton
- South Shore
- Spearfish
- Spencer
- Springfield
- Stephan
- Stickney
- Stratford
- Sturgis
- Summerset
- Summit
- Tabor
- Tea
- Timber Lake
- Tolstoy
- Toronto
- Trent
- Tripp
- Tyndall
- Vale
- Valley Springs
- Veblen
- Vermillion
- Viborg
- Volga
- Volin
- Wagner
- Wakonda
- Wall
- Wallace
- Wanblee
- Ward
- Warner
- Wasta
- Watertown
- Waubay
- Webster
- Wessington
- Wessington Springs
- Westport
- White
- White Lake
- White River
- Whitewood
- Willow Lake
- Wilmot
- Winner
- Wolsey
- Woonsocket
- Worthing
- Yankton