Water Hardness in 54941
Green Lake, Wisconsin · Green Lake County
Dataset updated March 9, 2026Matched to 3 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 3 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.
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 54941
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.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
| Green Lake Waterworks WI4240217 | groundwater | 230 PPM Hard | |
| Dakota Capital Mhc Llc WI4700271 | groundwater | 230 PPM Hard | |
| Lamplighter Mhc Llc WI4240221 | groundwater | 230 PPM Hard |
Nearby Zip Codes
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.
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 Green Lake, WI (54941).
Frequently Asked Questions
Is the water hard in Green Lake, WI (54941)?
The average water hardness in 54941 is 230 PPM (13.4 GPG), which is classified as hard.
Do I need a water softener in 54941?
With hardness of 230 PPM, a water softener is recommended for homes in 54941.
Is hard water in 54941 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 54941?
Zip code 54941 in Green Lake, Wisconsin is served by 3 water systems.
Learn More About Your Water
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