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Water Hardness in Marshfield, WI

Wisconsin · 1 zip codes · 7 matched water systems

464 PPM
27.1 GPG
Very Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20267 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 7 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
7 estimated sources
This city reading needs local confirmation before equipment sizing or purchase decisions.
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 Marshfield

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

7 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.
Wis Rapids Water Works & Lighting Comm
WI7720108
Very Hard
464 PPMgroundwater20,000 servedEstimated — Nearby Data
Marshfield Utilities
WI7720165
Very Hard
464 PPMgroundwater18,815 servedEstimated — Nearby Data
Spring Green Estates
WI1570110
Very Hard
464 PPMgroundwater300 servedEstimated — Nearby Data
Boardwalk Mhc Llc
WI7370540
Very Hard
464 PPMgroundwater130 servedEstimated — Nearby Data
Baltic Rentals Llc
WI7640083
Very Hard
464 PPMgroundwater75 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Marshfield, WI

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 Marshfield, WI.

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Frequently Asked Questions

How hard is the water in Marshfield, WI?

The citywide weighted average water hardness in Marshfield, WI is 464 PPM (27.1 GPG), classified as very hard. This is based on 7 matched water systems.

Do I need a water softener in Marshfield, WI?

With a citywide average hardness of 464 PPM, a water softener is recommended for homes in Marshfield. Confirm your tap reading before sizing equipment.

Is hard water in Marshfield, 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 Marshfield, WI?

Marshfield, Wisconsin is served by 7 matched water systems across 1 zip code.

Learn More About Your Water