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Water Hardness in 49090

South Haven, Michigan · Van Buren County

183 PPM
10.7 GPG
Hard
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 surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. 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 49090

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.
South Haven Area Water & Sewer Authority
MI0006101
Hard
183 PPMsurface water9,133 servedHigh Confidence — USGS Monitoring
Mitchell Brothers Mobile Home Park
MI0040606
Hard
183 PPMgroundwater122 servedHigh Confidence — USGS Monitoring
Glenn Haven Shores
MI0002655
Hard
183 PPMgroundwater100 servedHigh Confidence — USGS Monitoring
Riverfront Condos Of Niles
MI0004095
Hard
183 PPMgroundwater90 servedHigh Confidence — USGS Monitoring
Meadow Woods N/R Center
MI0060675
Hard
183 PPMgroundwater78 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment 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 South Haven, MI (49090).

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Frequently Asked Questions

Is the water hard in South Haven, MI (49090)?

The average water hardness in 49090 is 183 PPM (10.7 GPG), which is classified as hard.

Do I need a water softener in 49090?

With hardness of 183 PPM, a water softener is recommended for homes in 49090.

Is hard water in 49090 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 49090?

Zip code 49090 in South Haven, Michigan is served by 6 water systems.

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