KALISPELL, Montana Tap Water Quality

40,123 people served · 71 water systems

Failing

Satellite imagery via Esri World Imagery — approximate city center, not a facility address.

KALISPELL, Montana is a small city with 40,123 residents served by 71 distinct public water systems. Water service covers ZIP codes 59901, 59903, 59904.

KALISPELL has accumulated a significant number of EPA health-based violations. Reviewing the contaminants involved, requesting your utility's Consumer Confidence Report, and using certified point-of-use filtration is strongly advisable.

EPA reporting identifies Coliform Bacteria and Mercury (Inorganic) among the regulated contaminants associated with KALISPELL's recent health-based violations. Each contaminant has different sources, health implications, and recommended mitigation steps — links to the full EPA reference for each are listed alongside the violation history below.

KALISPELL's 22 violations is above the Montana average of 5.8 per city — worth reviewing the contaminant breakdown below.

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

Location

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Centered on ZIP-code centroids of water systems serving this city.

ZIP Codes Served

59901 59903 59904

Health-Based Violations (Last 5 Years)

EPA Maximum Contaminant Level exceedances reported by water systems serving KALISPELL. Each entry explains the contaminant, the health risk, and recommended precautions, and links to a full guide.

Mercury (Inorganic)chemical

EPA Code 1038 · Maximum Contaminant Level Exceedance

violations

EPA Limit

0.002 mg/L

Last Reading

10.24 MG/L

First Reported

Jan 2026

Most Recent

Jan 2026

What this violation means

Inorganic mercury in drinking water primarily damages kidneys. Most mercury exposure for Americans comes from fish (methylmercury), but localized water contamination occurs near refineries, coal-burning plants, and certain landfills.

Recommended precautions

→Reverse osmosis and distillation remove inorganic mercury.
→Activated carbon adsorption works for mercury but capacity is limited.
→Test private wells near industrial sites or landfills.

Read the complete guide to Mercury (Inorganic)

Coliform Bacteriamicrobial

EPA Code 8000 · Maximum Contaminant Level Exceedance · Treatment Technique Violation

violations

EPA Limit

0 per 100 mL presence/absence

Last Reading

—

First Reported

Aug 2021

Most Recent

Aug 2025

What this violation means

Total coliform bacteria are themselves usually harmless, but their presence signals that the water distribution system has a vulnerability — typically a cracked pipe, loss of pressure, or back-siphonage — that could allow disease-causing pathogens to enter. Repeated coliform-positive samples trigger mandatory utility investigation.

Recommended precautions

→If your utility issues a boil-water advisory, boil all drinking and cooking water for at least one minute.
→Use bottled water until the advisory is lifted.
→Ice from icemakers and beverages made before the advisory should be discarded.
→UV light and chlorination both kill coliform bacteria — most home filters do not.

Read the complete guide to Coliform Bacteria

Source: EPA Safe Drinking Water Information System (SDWIS). Health-based violations only. Older violations may have been resolved; check your utility's most recent Consumer Confidence Report for current status.

Water Systems Serving KALISPELL

FOSTERS COUNTRY VIEW TR PK LLC

PWSID: MT0000429

50 served

NORTH HAVEN HEIGHTS WATER ASSOC INC

PWSID: MT0000087

95 served

R J NORTHERN PARK

PWSID: MT0000085

50 served

SKY VIEW ESTATES

PWSID: MT0004743

60 served

PLEASANT VIEW HOMESITES W AND S DISTRICT

PWSID: MT0000086

85 served

3 violations

ASPEN KNOLL

PWSID: MT0004367

75 served

FOREST RIVER MOBILE HOME AND RV PARK

PWSID: MT0004809

90 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

EAGLE RIDGE ESTATES CO W AND S DIST

PWSID: MT0004475

115 served

WAPITI ACRES COUNTY WATER AND SEWER DIST

PWSID: MT0003774

32 served

ROCKY MOUNTAIN HI RV PARK

PWSID: MT0002812

275 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

2 violations

THOMPSON RANCHETTES II

PWSID: MT0002893

100 served

ROSEWOOD ACRES

PWSID: MT0004658

50 served

PHEASANT HAVEN ESTATES

PWSID: MT0004545

53 served

HOLBROOK ESTATES

PWSID: MT0005154

120 served

PLEASANT GROVE MANUFACTURED HOME SITES

PWSID: MT0005211

70 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

GREENACRES COUNTY WATER AND SEWER DIST

PWSID: MT0001923

450 served

FOX HILL ESTATES

PWSID: MT0004458

163 served

SWAN RIDGE HOA

PWSID: MT0004770

28 served

3 violations

SUNRISE TERRACE SUBD NO 2

PWSID: MT0003040

131 served

QUAIL RIDGE

PWSID: MT0004283

123 served

AP KOOKOOSINT

PWSID: MT0004929

40 served

7 violations

EAST VALLEY ESTATES

PWSID: MT0004514

63 served

HALFMOON MEADOWS HOA

PWSID: MT0004976

25 served

AP WILLIAMS

PWSID: MT0001671

280 served

MEADOW MANOR

PWSID: MT0004397

410 served

HELENA NORTH KOA

PWSID: MT0003679

50 served

FIELDSTONE SUBDIVISION

PWSID: MT0004635

52 served

COTTONWOOD HOMES

PWSID: MT0004626

45 served

PLEASANT HILL ESTATES HOA

PWSID: MT0000088

90 served

4 violations

WETTINGTON WATER DISTRICT INC

PWSID: MT0004083

119 served

3 violations

COUNTRY ESTATES WATER SUPPLY

PWSID: MT0002846

490 served

HILLTOP TERRACE SUBDIVISION

PWSID: MT0001922

230 served

ASHLEY TRAILS

PWSID: MT0004945

27 served

JUNIPER BAY VILLAS

PWSID: MT0004576

26 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

KALISPELL PUBLIC WORKS

PWSID: MT0000259

25,000 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

SUNRISE TERRACE NO 1 HOA

PWSID: MT0000077

85 served

HADLEY ROAD HOA

PWSID: MT0004645

33 served

AP COUNTRYSIDE ESTATES

PWSID: MT0006000

93 served

TWO MILE TRACT HOA

PWSID: MT0003328

128 served

BROOK DRIVE WATER ASSN

PWSID: MT0000099

32 served

What Can You Do?

✅ Request your utility's annual Consumer Confidence Report (CCR) — required by law.
✅ Use an NSF-certified water filter if violations involve lead, arsenic, or PFAS.
✅ Run cold water for 30 seconds before drinking if you have older plumbing (reduces lead).
✅ Check back monthly — we update data from the EPA every 30 days.

About this data

This overview reflects EPA SDWIS data published as of 2026-05-18. It covers active Community Water Systems (CWS) that exceeded federal Maximum Contaminant Levels during the past five-year EPA reporting window. For up-to-the-minute information, request a current Consumer Confidence Report from your utility, or review the EPA's public dashboard.

Frequently Asked Questions

Is KALISPELL, Montana tap water safe to drink?▼

This city's water had numerous EPA violations in the last 5 years. Consider filtered water.

How many EPA violations does KALISPELL have?▼

KALISPELL has 22 EPA health-based water violations in the last 5 years across 71 water systems serving 40,123 people.

What contaminants have been found in KALISPELL water?▼

The following EPA-regulated contaminants have been detected: 8000, 1038. View details about each contaminant, health effects, and recommended precautions above in the violations table.

Should I use a water filter in KALISPELL?▼

Using an NSF-certified water filter is recommended if your area has violations involving lead, arsenic, or PFAS. For other contaminants, consult your local water utility. Check the annual Consumer Confidence Report (CCR) for detailed guidance.

What should I do if there are violations in KALISPELL?▼

Request your water utility's annual Consumer Confidence Report (CCR), which is required by the EPA. Follow the utility's guidance on boil water advisories. Run cold water for 30 seconds before drinking if you have older plumbing. Use an NSF-certified filter if needed based on your water system's violations.