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Water Hardness in 83501

South Gate Plaza, Idaho · Nez Perce County

101 PPM
5.9 GPG
Slightly Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 10 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 10 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
10 USGS-backed sources
10 matched systems total for this ZIP; 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 Serving 83501

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

10 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.
Lewiston Orchards Irrigation Dist
ID2350015
Slightly Hard
101 PPMgroundwater20,000 servedHigh Confidence — USGS Monitoring
Lewiston City Of
ID2350014
Slightly Hard
101 PPMsurface water15,001 servedHigh Confidence — USGS Monitoring
Red Pheasant Water Company Llc
ID2350040
Slightly Hard
101 PPMgroundwater480 servedHigh Confidence — USGS Monitoring
Cougar Ridge Water & Sewer
ID2350036
Slightly Hard
101 PPMgroundwater173 servedHigh Confidence — USGS Monitoring
Eagles Pointe Subdivision
ID2350038
Slightly Hard
101 PPMgroundwater110 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

What This Means For You

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

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 South Gate Plaza, ID (83501).

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Frequently Asked Questions

Is the water hard in South Gate Plaza, ID (83501)?

The average water hardness in 83501 is 101 PPM (5.9 GPG), which is classified as slightly hard.

Do I need a water softener in 83501?

At 101 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 83501 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 83501?

Zip code 83501 in South Gate Plaza, Idaho is served by 10 water systems.

Learn More About Your Water