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Water Hardness in Lolo, MT

Montana · 1 zip codes · 6 matched water systems

176 PPM
10.3 GPG
Moderately Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 178 PPM

Dataset updated March 9, 20266 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Missoula Water
MT0000294
Water source: groundwater
Serves: 68,200
USGS environmental estimate: 108 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 6 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
1 verified treated-water source
6 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 Lolo

These systems are matched to Lolo, MT. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

6 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.
Missoula Water
MT0000294
Moderately Hard
176 PPMgroundwater68,200 servedVerified — Annual Water Quality Report
Source water: 108 PPM
Lolo Water And Sewer Dist
MT0000278
Hard
217 PPMgroundwater3,315 servedEstimated — Nearby Data
Bitterroot Gateway Mb Pk Lolo
MT0000443
Hard
217 PPMgroundwater130 servedEstimated — Nearby Data
Bitterroot Meadows Hoa Lolo
MT0003146
Hard
217 PPMgroundwater120 servedEstimated — Nearby Data
Valley West Trailer Court
MT0000444
Hard
217 PPMgroundwater115 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Lolo, MT

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 Lolo, MT.

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Frequently Asked Questions

How hard is the water in Lolo, MT?

The citywide weighted average water hardness in Lolo, MT is 178 PPM (10.4 GPG), classified as moderately hard. This is based on 6 matched water systems. The gauge highlights Missoula Water, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Lolo, MT?

With a citywide average hardness of 178 PPM, a water softener is worth considering for homes in Lolo. Confirm your tap reading before sizing equipment.

Is hard water in Lolo, MT 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 Lolo, MT?

Lolo, Montana is served by 6 matched water systems across 1 zip code.

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