ZIP Code 57718 Water Quality

South Dakota · 10,911 people served · 48 water systems

Failing

ZIP code 57718 is in South Dakota and is a small city from a drinking-water-service perspective, with 10,911 people served by 48 EPA-registered public water systems. It overlaps with 5 communities including BLACK HAWK, PIEDMONT, RAPID CITY, SUMMERSET, BLACKHAWK.

Within ZIP code 57718, the EPA Safe Drinking Water Information System (SDWIS) records 22 health-based violations during the past five years across 48 water systems serving this postal area. The grade of F reflects the aggregate compliance pattern, not the current daily water quality.

Last updated: 2026-05-18 · Source: EPA SDWIS

ZIP Code Location

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Cities in ZIP 57718

BLACK HAWK

PIEDMONT

RAPID CITY

SUMMERSET

BLACKHAWK

Water Systems Serving 57718

VIEWFIELD RURAL WATER SYSTEM

PWSID: SD4602287

220 served

NORRIS PEAK WATER USERS ASSOC

PWSID: SD4602349

30 served

PILLAR PEAK

PWSID: SD4602326

38 served

CANYON SPRINGS WATER AND SEWER DISTR

PWSID: SD4602311

163 served

EAGLE WATER COMPANY

PWSID: SD4602307

48 served

QUAAL WATER ASSOCIATION

PWSID: SD4602127

95 served

OAK MOUNTAIN COUNTRY ESTATES

PWSID: SD4602151

85 served

WILD TURKEY ESTATES II

PWSID: SD4602282

70 served

HIGH MEADOWS WATER COMPANY

PWSID: SD4600395

140 served

PEACEFUL PINES II

PWSID: SD4602000

71 served

SUNNYSIDE MOBILE HOME PARK II

PWSID: SD4602001

235 served

WHISPERING WILLOWS

PWSID: SD4602094

64 served

D & E WATER COMPANY

PWSID: SD4600392

100 served

SPRING CREEK ACRES

PWSID: SD4602252

172 served

COUNTRY ROAD ESTATES

PWSID: SD4602204

112 served

RENDEZVOUS RANCH

PWSID: SD4602210

195 served

VALHALLA ADDITION

PWSID: SD4602211

38 served

RUSHMORE RANCH ESTATES

PWSID: SD4602212

168 served

76 RANCH ESTATES

PWSID: SD4602259

40 served

GOLDEN VALLEY WATER COMPANY

PWSID: SD4602261

283 served

WILD TURKEY ESTATES I

PWSID: SD4602281

33 served

THRALL MTN. PROPERTY OWNERS ASSOCIAT

PWSID: SD4600513

70 served

NORTHDALE SANITARY DISTRICT

PWSID: SD4600514

1,075 served

MIDLAND HEIGHTS

PWSID: SD4600515

130 served

GOLDEN MEADOWS

PWSID: SD4600516

96 served

TERRY TROJAN WATER DISTRICT

PWSID: SD4600053

400 served

EDELWEISS MOUNTAIN IMPROVEMENT ASSOC

PWSID: SD4600273

70 served

RAPID CITY MOBILE HOME PARK

PWSID: SD4600257

170 served

PINE CLIFF ESTATES

PWSID: SD4600270

180 served

EAST RIDGE ACRES

PWSID: SD4601000

118 served

CROOKED OAKS CANYON HOMEOWNERS

PWSID: SD4600915

70 served

SHIRT TAIL GULCH DEVELOPMENT

PWSID: SD4602232

65 served

HIGH SHERIDAN RANCH

PWSID: SD4602234

38 served

HEARTLAND COUNTRY RANCHETTES

PWSID: SD4602235

95 served

AUTUMN MEADOWS SANITARY DISTRICT

PWSID: SD4602240

49 served

DRY CREEK ESTATES

PWSID: SD4602241

233 served

VALLEY VIEW WATER COMPANY

PWSID: SD4600040

248 served

PINE HILLS PARK

PWSID: SD4600041

200 served

WOODLAND HILLS SANITARY DISTRICT

PWSID: SD4600042

255 served

BLACK HAWK WATER USER DISTRICT

PWSID: SD4600043

4,500 served

HIGH MEADOWS RANCHETTES

PWSID: SD4600011

60 served

SACORA MOBILE HOME PARK

PWSID: SD4600546

42 served

OWANKA RURAL WATER SYSTEM

PWSID: SD4602310

52 served

THE TIMBERS

PWSID: SD4602376

33 served

PRAIRIE HAVEN SUBDIVISION

PWSID: SD4602322

105 served

CENTENNIAL VISTA ESTATES

PWSID: SD4602280

44 served

THREE PEAKS WATER ASSOCIATION

PWSID: SD4602401

25 served

AR RANCH

PWSID: SD4602379

88 served

About ZIP-code water data

Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.