ZIP Code 59901 Water Quality

Montana · 12,115 people served · 51 water systems

Failing

ZIP code 59901 is in Montana and is a small city from a drinking-water-service perspective, with 12,115 people served by 51 EPA-registered public water systems. It corresponds to KALISPELL.

Within ZIP code 59901, the EPA Safe Drinking Water Information System (SDWIS) records 12 health-based violations during the past five years across 51 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 59901

KALISPELL

Water Systems Serving 59901

NORTH HAVEN HEIGHTS WATER ASSOC INC

PWSID: MT0000087

95 served

R J NORTHERN PARK

PWSID: MT0000085

50 served

PLEASANT VIEW HOMESITES W AND S DISTRICT

PWSID: MT0000086

85 served

ASPEN KNOLL

PWSID: MT0004367

75 served

ROCKY CLIFF ESTATES

PWSID: MT0004459

140 served

HANSONS TRAILER COURT

PWSID: MT0000095

40 served

RIVERVIEW OVERLOOK HOA

PWSID: MT0004631

33 served

FOYS LAKESIDE ESTATES WATER & SEWER DIST

PWSID: MT0004150

36 served

WAPITI ACRES COUNTY WATER AND SEWER DIST

PWSID: MT0003774

32 served

RIDGEVIEW WATER USERS ASSOC

PWSID: MT0001934

35 served

SPRUCE MEADOWS HOA

PWSID: MT0004662

40 served

WEST VALLEY PINES HOA INC

PWSID: MT0003414

130 served

SKYVIEW PARK

PWSID: MT0002516

55 served

THOMPSON RANCHETTES II

PWSID: MT0002893

100 served

ROSEWOOD ACRES

PWSID: MT0004658

50 served

HOLBROOK ESTATES

PWSID: MT0005154

120 served

COUNTRY LAKE HOMES WHITEFISH

PWSID: MT0003031

260 served

PANORAMIC MOUNTAIN RIVER HEIGHTS W DIST

PWSID: MT0000089

65 served

COUNTRY BOURNE

PWSID: MT0004597

25 served

DWAYNES VILLAGE

PWSID: MT0004745

40 served

TAMARACK WOODS HOA LAKESIDE

PWSID: MT0003393

180 served

SKY RANCH WATER ASSOCIATION

PWSID: MT0004198

45 served

SOUTHSIDE PUBLIC WATER SUPPLY

PWSID: MT0002652

306 served

ASHLEY HILLS HOA

PWSID: MT0004543

75 served

STILLWATER WATER DISTRICT

PWSID: MT0000078

85 served

FOX HILL ESTATES

PWSID: MT0004458

163 served

SWAN RIDGE HOA

PWSID: MT0004770

28 served

SUNRISE TERRACE SUBD NO 2

PWSID: MT0003040

131 served

QUAIL RIDGE

PWSID: MT0004283

123 served

EAST VALLEY ESTATES

PWSID: MT0004514

63 served

HALFMOON MEADOWS HOA

PWSID: MT0004976

25 served

HELENA NORTH KOA

PWSID: MT0003679

50 served

FIELDSTONE SUBDIVISION

PWSID: MT0004635

52 served

PLEASANT HILL ESTATES HOA

PWSID: MT0000088

90 served

HIDEAWAY TR PK COLUMBIA FALLS

PWSID: MT0001737

75 served

SWEETGRASS RANCH SUBDIVISION

PWSID: MT0005002

65 served

EAST EVERGREEN MOBILE MANOR

PWSID: MT0004753

155 served

DISTRICT COURT LLC

PWSID: MT0002651

50 served

GREEN ACRES COURT

PWSID: MT0000109

85 served

PONDEROSA HOMEOWNERS ASSN INC

PWSID: MT0002863

246 served

STILLWATER ESTATES COUNTY W AND S DIST

PWSID: MT0004221

130 served

GREENWOOD VILLAGE RV AND MHP

PWSID: MT0003602

195 served

COUNTRY COURT COMMUNITY INC

PWSID: MT0002819

25 served

FOREST HILL HOA

PWSID: MT0001785

50 served

NORTHFORK TR CT COLUMBIA FALLS

PWSID: MT0000110

48 served

WHITEFISH RIVER RANCH

PWSID: MT0004660

36 served

FLATHEAD COUNTY WATER AND SEWER

PWSID: MT0001744

7,775 served

HILLCREST COMMUNITY WATER

PWSID: MT0000430

65 served

HADLEY ROAD HOA

PWSID: MT0004645

33 served

TWO MILE TRACT HOA

PWSID: MT0003328

128 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.