WH

Water Hardness in 83861

Saint Maries, Idaho · Benewah County

69 PPM
4 GPG
Slightly Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 5 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 5 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
5 USGS-backed sources
5 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. 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 83861

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.

5 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.
St Maries City Of
ID1050024
Slightly Hard
69 PPMsurface water4,173 servedHigh Confidence — USGS Monitoring
Cottonwood Point Water Assn
ID1050008
Slightly Hard
69 PPMgroundwater151 servedHigh Confidence — USGS Monitoring
Emida Water And Sewer Association
ID1050009
Slightly Hard
69 PPMgroundwater95 servedHigh Confidence — USGS Monitoring
Evergreen Terrace Water Association
ID1050010
Slightly Hard
69 PPMgroundwater85 servedHigh Confidence — USGS Monitoring
Cassandra Hills Owners Assn
ID1050004
Slightly Hard
69 PPMgroundwater57 servedHigh Confidence — USGS Monitoring

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 Saint Maries, ID (83861).

Submit Your Data

Frequently Asked Questions

Is the water hard in Saint Maries, ID (83861)?

The average water hardness in 83861 is 69 PPM (4 GPG), which is classified as slightly hard.

Do I need a water softener in 83861?

At 69 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 83861 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 83861?

Zip code 83861 in Saint Maries, Idaho is served by 5 water systems.

Learn More About Your Water