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City water profile

Wibaux water quality

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

Median indexed hardness

415PPM

One indexed ZIP

Range 415–415 PPM

State comparison
293 PPM above
State hardness rank
#10 of 117
Matched utilities
1
Active health records
0

City summary

What the indexed records say

Wibaux has 1 published ZIP profile across Wibaux County. The indexed median is 415 PPM, compared with 122 PPM across Montana.

Among the 117 Montanacities with an indexed median, Wibaux ranks #10from 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

Soft0 ZIPs
Moderately hard0 ZIPs
Hard0 ZIPs
Very hard1 ZIP

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
37.2 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Aug 9, 2017 to Aug 25, 2020.

ZIP directory

Water reports in Wibaux

Open a ZIP for site-level provenance and measurements.

ZIP code

59353

Very Hard

415 PPM

Nearest site
37.2 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Wibaux Town Of

PWSID MT0000361

Groundwater
System population served
550
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

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
E. COLIMT0000361May 5, 2026Resolved
Lead and Copper RuleMT0000361Oct 1, 2025Unaddressed
Revised Total Coliform RuleMT0000361Jun 1, 2025Resolved
E. COLIMT0000361Jan 15, 2025Resolved
Nitrate-NitriteMT0000361Jan 1, 2025Resolved
E. COLIMT0000361Dec 10, 2024Resolved
E. COLIMT0000361Nov 26, 2024Resolved
Lead and Copper RuleMT0000361Oct 1, 2024Unaddressed
Revised Total Coliform RuleMT0000361Aug 1, 2024Resolved
Revised Total Coliform RuleMT0000361Dec 1, 2023Resolved

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 Wibaux

Is the water hard?

The indexed city median is 415 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.