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Water Hardness in Belle Fourche, SD

South Dakota · 1 zip codes · 7 matched water systems

218 PPM
12.7 GPG
Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 20267 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 7 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
1 USGS-backed source
7 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
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 Belle Fourche

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

7 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.
Belle Fourche
SD4600037
Hard
218 PPMgroundwater5,617 servedEstimated — Nearby Data
Rimrock Water Company Llc
SD4602220
Hard
218 PPMgroundwater365 servedEstimated — Nearby Data
Hay Creek Water Company
SD4602143
Hard
218 PPMgroundwater323 servedEstimated — Nearby Data
Black Hills Water Distribution, Llc
SD4602144
Hard
218 PPMgroundwater135 servedEstimated — Nearby Data
Fruitdale
SD4600135
Hard
218 PPMgroundwater75 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Belle Fourche, SD

What This Means For You

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

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 Belle Fourche, SD.

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Frequently Asked Questions

How hard is the water in Belle Fourche, SD?

The citywide weighted average water hardness in Belle Fourche, SD is 218 PPM (12.7 GPG), classified as hard. This is based on 7 matched water systems.

Do I need a water softener in Belle Fourche, SD?

With a citywide average hardness of 218 PPM, a water softener is recommended for homes in Belle Fourche. Confirm your tap reading before sizing equipment.

Is hard water in Belle Fourche, SD 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 Belle Fourche, SD?

Belle Fourche, South Dakota is served by 7 matched water systems across 1 zip code.

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