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Water Hardness in 54971

Ripon, Wisconsin · Fond Du Lac County

318 PPM
18.6 GPG
Very Hard
0Soft60120180300+
Verified - Annual Water Quality Report

Dataset updated March 9, 2026Matched to 2 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 2 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
1 verified treated-water source
2 matched systems total for this ZIP; 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 Serving 54971

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.

2 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.
Fond Du Lac Waterworks
WI4200469
Very Hard
300 PPMgroundwater44,303 servedVerified - Annual Water Quality Report
Source water: 382 PPM
Ripon Water Utility
WI4200476
Very Hard
422 PPMgroundwater7,716 servedHigh Confidence - USGS Monitoring

Nearby Zip Codes

549642005393130154941230539193025498020054974300549323005492326254963206539462305497930053963417

What This Means For You

Use this ZIP reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing equipment.

MethodologyData sourcesHow 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 Ripon, WI (54971).

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Frequently Asked Questions

Is the water hard in Ripon, WI (54971)?

The average water hardness in 54971 is 318 PPM (18.6 GPG), which is classified as very hard.

Do I need a water softener in 54971?

With hardness of 318 PPM, a water softener is recommended for homes in 54971.

Is hard water in 54971 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 54971?

Zip code 54971 in Ripon, Wisconsin is served by 2 water systems.

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