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City water profile

Kalispell water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Kalispell, Montana.

Median indexed hardness

35PPM

One indexed ZIP

Range 34.7–34.7 PPM

State comparison
87 PPM below
State hardness rank
#97 of 117
Matched utilities
10
Active health records
1

City summary

What the indexed records say

Kalispell has 1 published ZIP profile across Flathead County. The indexed median is 35 PPM, compared with 122 PPM across Montana.

Among the 117 Montanacities with an indexed median, Kalispell ranks #97from highest to lowest. Across all 145 state ZIP profiles, available estimates run from 0.2to 799.5 PPM.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft1 ZIP
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard0 ZIPs

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
39.8 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Jul 9, 2024 to Nov 21, 2024.

ZIP directory

Water reports in Kalispell

Open a ZIP for site-level provenance and measurements.

ZIP code

59901

Soft

34.7 PPM

Nearest site
39.8 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Kalispell Public Works

PWSID MT0000259

Groundwater
System population served
25,000
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Flathead County Water And Sewer

PWSID MT0001744

Groundwater
System population served
7,775
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Country Estates Water Supply

PWSID MT0002846

Groundwater
System population served
490
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Greenacres County Water And Sewer Dist

PWSID MT0001923

Groundwater
System population served
450
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Meadow Manor

PWSID MT0004397

Groundwater
System population served
410
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Mountain Villa Apts Kalispell

PWSID MT0002640

Groundwater
System population served
300
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Northern Pines Community Hoa

PWSID MT0004193

Groundwater
System population served
295
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Ridgewood Terrace Mhp

PWSID MT0004186

Groundwater
System population served
280
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Ap Williams

PWSID MT0001671

Groundwater
System population served
280
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Rocky Mountain Hi Rv Park

PWSID MT0002812

Groundwater
System population served
275
Last reported
Jun 29, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Lead and Copper RuleMT0004083Jan 1, 2026Unaddressed
Nitrate-NitriteMT0004770Jan 1, 2026Archived · health-based
Lead and Copper RuleMT0002846Oct 1, 2025Unaddressed
Lead and Copper RuleMT0004397Oct 1, 2025Unaddressed
Lead and Copper RuleMT0004700Oct 1, 2025Unaddressed
Lead and Copper RuleMT0001922Oct 1, 2025Unaddressed
Consumer Confidence RuleMT0004270Oct 1, 2025Resolved
Consumer Confidence RuleMT0000077Oct 1, 2025Resolved
Lead and Copper RuleMT0004743Oct 1, 2025Unaddressed
Lead and Copper RuleMT0004945Oct 1, 2025Unaddressed

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Kalispell

Is the water hard?

The indexed city median is 35 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.