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City water profile

Hysham water quality

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

Median indexed hardness

620PPM

One indexed ZIP

Range 620–620 PPM

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

City summary

What the indexed records say

Hysham has 1 published ZIP profile across Treasure County. The indexed median is 620 PPM, compared with 122 PPM across Montana.

Among the 117 Montanacities with an indexed median, Hysham ranks #3from 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
47.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Feb 24, 2016 to Jun 12, 2018.

ZIP directory

Water reports in Hysham

Open a ZIP for site-level provenance and measurements.

ZIP code

59038

Very Hard

620 PPM

Nearest site
47.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Hysham Town Of

PWSID MT0000428

Surface water
System population served
262
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
Surface Water Treatment RuleMT0000428Jul 1, 2025Archived
Interim Enhanced Surface Water Treatment RuleMT0000428Jul 1, 2025Resolved · health-based
Interim Enhanced Surface Water Treatment RuleMT0000428Jun 1, 2025Resolved · health-based
Surface Water Treatment RuleMT0000428Jun 1, 2025Archived
Surface Water Treatment RuleMT0000428Apr 1, 2025Archived
TTHMMT0000428Jan 1, 2023Resolved
Total Haloacetic Acids (HAA5)MT0000428Jan 1, 2023Resolved
Surface Water Treatment RuleMT0000428Dec 1, 2022Archived · health-based
Surface Water Treatment RuleMT0000428Nov 1, 2022Archived
Surface Water Treatment RuleMT0000428Oct 1, 2022Archived · health-based

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 Hysham

Is the water hard?

The indexed city median is 620 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.