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Water Hardness in Greenleaf, ID

Idaho · 1 zip codes · 4 matched water systems

150 PPM
8.8 GPG
Moderately Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 150 PPM

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

System used for this reading
Nampa City Of
ID3140080
Water source: groundwater
Serves: 100,200
USGS environmental estimate: 196 PPM
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
3 verified treated-water sources
4 matched systems total for this city; treated-water reports are prioritized when available.
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 Greenleaf

These systems are matched to Greenleaf, ID. 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.
Nampa City Of
ID3140080
Moderately Hard
150 PPMgroundwater100,200 servedVerified — Annual Water Quality Report
Source water: 196 PPM
Caldwell City Of
ID3140013
Moderately Hard
150 PPMgroundwater74,000 servedVerified — Annual Water Quality Report
Source water: 196 PPM
Middleton City Of
ID3140074
Moderately Hard
150 PPMgroundwater13,190 servedVerified — Annual Water Quality Report
Source water: 110 PPM
Greenleaf City Of
ID3140041
Moderately Hard
134 PPMgroundwater846 servedHigh Confidence — USGS Monitoring

Zip Codes in Greenleaf, 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 Greenleaf, ID.

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Frequently Asked Questions

How hard is the water in Greenleaf, ID?

The citywide weighted average water hardness in Greenleaf, ID is 150 PPM (8.8 GPG), classified as moderately hard. This is based on 4 matched water systems. The gauge highlights Nampa City Of, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Greenleaf, ID?

With a citywide average hardness of 150 PPM, a water softener is worth considering for homes in Greenleaf. Confirm your tap reading before sizing equipment.

Is hard water in Greenleaf, 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 Greenleaf, ID?

Greenleaf, Idaho is served by 4 matched water systems across 1 zip code.

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