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Water Hardness in 49913

Laurium, Michigan · Houghton County

59 PPM
3.5 GPG
Soft
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 6 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 6 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
6 USGS-backed sources
6 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.
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 Serving 49913

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.

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.
Upper Michigan Water Company
MI0004800
Soft
59 PPMgroundwater5,535 servedHigh Confidence — USGS Monitoring
Laurium
MI0003810
Soft
59 PPMgroundwater1,947 servedHigh Confidence — USGS Monitoring
Torch Lake Township
MI0003270
Soft
59 PPMgroundwater946 servedHigh Confidence — USGS Monitoring
Calumet
MI0001040
Soft
59 PPMgroundwater726 servedHigh Confidence — USGS Monitoring
Houghton Co Memorial Airport
MI0003235
Soft
59 PPMgroundwater50 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

49942364990159499343649917494993059499224249945494980536499317949921364990536499639

What This Means For You

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

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft 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 Laurium, MI (49913).

Submit Your Data

Frequently Asked Questions

Is the water hard in Laurium, MI (49913)?

The average water hardness in 49913 is 59 PPM (3.5 GPG), which is classified as soft.

Do I need a water softener in 49913?

At 59 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 49913 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 49913?

Zip code 49913 in Laurium, Michigan is served by 6 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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