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Water Hardness in La Crosse, WI

Wisconsin · 2 zip codes · 12 matched water systems

240 PPM
14 GPG
Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 240 PPM

Dataset updated March 9, 202612 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
La Crosse Waterworks
WI6320309
Water source: groundwater
Serves: 53,000
USGS environmental estimate: 272 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 12 matched water systems and 2 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
12 verified treated-water sources
12 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 La Crosse

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

12 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.
La Crosse Waterworks
WI6320309
Hard
240 PPMgroundwater53,000 servedVerified — Annual Water Quality Report
Source water: 272 PPM
Onalaska Waterworks
WI6320327
Hard
240 PPMgroundwater18,000 servedVerified — Annual Water Quality Report
Source water: 272 PPM
Holmen Waterworks
WI6320306
Hard
240 PPMgroundwater10,147 servedVerified — Annual Water Quality Report
Source water: 272 PPM
Shelby Tn Of Wedgewood Vly
WI6320311
Hard
240 PPMgroundwater1,020 servedVerified — Annual Water Quality Report
Source water: 272 PPM
St Joseph San Dist 1
WI6320318
Hard
240 PPMgroundwater503 servedVerified — Annual Water Quality Report
Source water: 272 PPM
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in La Crosse, WI

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 La Crosse, WI.

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Frequently Asked Questions

How hard is the water in La Crosse, WI?

The citywide weighted average water hardness in La Crosse, WI is 240 PPM (14 GPG), classified as hard. This is based on 12 matched water systems.

Do I need a water softener in La Crosse, WI?

With a citywide average hardness of 240 PPM, a water softener is recommended for homes in La Crosse. Confirm your tap reading before sizing equipment.

Is hard water in La Crosse, WI 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 La Crosse, WI?

La Crosse, Wisconsin is served by 12 matched water systems across 2 zip codes.

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