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Water Hardness in Sunburst, MT

Montana · 1 zip codes · 4 matched water systems

284 PPM
16.6 GPG
Very Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20264 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 4 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
4 estimated sources
This city reading needs local confirmation before equipment sizing or purchase decisions.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems in Sunburst

These systems are matched to Sunburst, MT. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

4 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Sunburst Town Of
MT0000338
Very Hard
284 PPMgroundwater459 servedEstimated — Nearby Data
Oilmont County Water District
MT0000587
Very Hard
284 PPMgroundwater300 servedEstimated — Nearby Data
Rimrock Colony
MT0001783
Very Hard
284 PPMgroundwater124 servedEstimated — Nearby Data
Nine Mile Co Water/Sewer District
MT0005075
Very Hard
284 PPMgroundwater90 servedEstimated — Nearby Data

Zip Codes in Sunburst, MT

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Very Hard Water - Treatment Strongly Recommended

Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How to Test Your Water

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Sunburst, MT.

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Frequently Asked Questions

How hard is the water in Sunburst, MT?

The citywide weighted average water hardness in Sunburst, MT is 284 PPM (16.6 GPG), classified as very hard. This is based on 4 matched water systems.

Do I need a water softener in Sunburst, MT?

With a citywide average hardness of 284 PPM, a water softener is recommended for homes in Sunburst. Confirm your tap reading before sizing equipment.

Is hard water in Sunburst, MT safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve Sunburst, MT?

Sunburst, Montana is served by 4 matched water systems across 1 zip code.

Learn More About Your Water