Water Hardness in Saint Maries, ID
Idaho · 1 zip codes · 5 matched water systems
Dataset updated March 9, 20265 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
Is Saint Maries, ID Water Hard or Soft?
The citywide weighted average water hardness in Saint Maries, ID is 69 PPM (4 GPG), classified as slightly hard. Individual systems, ZIP codes, and private wells can differ.
Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.
How this city reading is built
This city reading is a weighted rollup across 5 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
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 Saint Maries
These systems are matched to Saint Maries, ID. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| St Maries City Of ID1050024 | surface water | 69 PPM Slightly Hard | |
| Cottonwood Point Water Assn ID1050008 | groundwater | 69 PPM Slightly Hard | |
| Emida Water And Sewer Association ID1050009 | groundwater | 69 PPM Slightly Hard | |
| Evergreen Terrace Water Association ID1050010 | groundwater | 69 PPM Slightly Hard | |
| Cassandra Hills Owners Assn ID1050004 | groundwater | 69 PPM Slightly Hard |
Zip Codes in Saint Maries, ID
What This Means For You
Use this city reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing 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 Saint Maries, ID.
Frequently Asked Questions
How hard is the water in Saint Maries, ID?
The citywide weighted average water hardness in Saint Maries, ID is 69 PPM (4 GPG), classified as slightly hard. This is based on 5 matched water systems.
Do I need a water softener in Saint Maries, ID?
At 69 PPM, the citywide average is relatively soft. A water softener is generally not necessary.
Is hard water in Saint Maries, 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 Saint Maries, ID?
Saint Maries, Idaho is served by 5 matched water systems across 1 zip code.
Learn More About Your Water
How to Test Water Hardness at Home
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