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Water Hardness in Rexburg, ID

Idaho · 1 zip codes · 7 matched water systems

204 PPM
11.9 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
7 USGS-backed sources
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 Rexburg

These systems are matched to Rexburg, ID. 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.
Rexburg City Of
ID7330022
Hard
204 PPMgroundwater40,462 servedHigh Confidence — USGS Monitoring
Cedar Butte Subdivision
ID7330067
Hard
204 PPMgroundwater300 servedHigh Confidence — USGS Monitoring
Shotgun North
ID7220065
Hard
204 PPMgroundwater285 servedHigh Confidence — USGS Monitoring
Shotgun Cherokee Subd 5
ID7220063
Hard
204 PPMgroundwater245 servedHigh Confidence — USGS Monitoring
Aspen Ridge Subd
ID7220007
Hard
204 PPMgroundwater204 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Rexburg, ID

What This Means For You

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

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

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Frequently Asked Questions

How hard is the water in Rexburg, ID?

The citywide weighted average water hardness in Rexburg, ID is 204 PPM (11.9 GPG), classified as hard. This is based on 7 matched water systems.

Do I need a water softener in Rexburg, ID?

With a citywide average hardness of 204 PPM, a water softener is recommended for homes in Rexburg. Confirm your tap reading before sizing equipment.

Is hard water in Rexburg, ID 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 Rexburg, ID?

Rexburg, Idaho is served by 7 matched water systems across 1 zip code.

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