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Water Hardness in Saint Louis Park, MN

Minnesota · 2 zip codes · 21 matched water systems

256 PPM
15 GPG
Very Hard
0Soft60120180300+
Verified — Annual Water Quality Report

City avg (weighted): 256 PPM

Dataset updated March 9, 202621 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Minneapolis
MN1270024
Water source: surface water
Serves: 425,300
USGS environmental estimate: 182 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 21 matched water systems and 2 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
19 verified treated-water sources
21 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 Saint Louis Park

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

21 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.
Minneapolis
MN1270024
Very Hard
256 PPMsurface water425,300 servedVerified — Annual Water Quality Report
Source water: 182 PPM
Bloomington
MN1270001
Very Hard
256 PPMsurface water91,300 servedVerified — Annual Water Quality Report
Source water: 345 PPM
Brooklyn Park
MN1270005
Very Hard
256 PPMgroundwater89,995 servedVerified — Annual Water Quality Report
Source water: 438 PPM
Plymouth
MN1270044
Very Hard
256 PPMgroundwater81,026 servedVerified — Annual Water Quality Report
Source water: 366 PPM
Maple Grove
MN1270020
Very Hard
256 PPMgroundwater75,000 servedVerified — Annual Water Quality Report
Source water: 235 PPM
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Saint Louis Park, MN

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Very Hard Water - Treatment Strongly Recommended

Your water is very hard. Without treatment, you can expect significant scale buildup in pipes and appliances, higher energy bills from reduced water heater efficiency, and persistent issues with skin and hair dryness.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | 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 Louis Park, MN.

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Frequently Asked Questions

How hard is the water in Saint Louis Park, MN?

The citywide weighted average water hardness in Saint Louis Park, MN is 256 PPM (15 GPG), classified as very hard. This is based on 21 matched water systems. The gauge highlights Minneapolis, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Saint Louis Park, MN?

With a citywide average hardness of 256 PPM, a water softener is recommended for homes in Saint Louis Park. Confirm your tap reading before sizing equipment.

Is hard water in Saint Louis Park, MN 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 Louis Park, MN?

Saint Louis Park, Minnesota is served by 21 matched water systems across 2 zip codes.

Learn More About Your Water