Looking for well water testing in Wausau, WI? Describe your project once and up to three water testing pros who work in Wausau and Marathon County get back to you with a quote. It's free and there is no obligation.
Wausau is home to about 40,262 people (2024 Census Bureau estimate), a stable community (+0.6% since 2020). With 2,094 people per sq mi, it is a suburban area. Homes on private wells here are responsible for their own water quality.
Wausau at a glance
- Population (Census Bureau estimate, 2024)
- 40,262 (+0.6% since 2020)
- Rank in Wisconsin
- 19th of 607 cities and towns
- Land area
- 19 sq mi
- Population density
- 2,094 people per sq mi (suburban)
- Type
- City (Wausau city)
- Main county
- Marathon County
What to check before hiring in Wausau
- Certified lab: in Wisconsin, use a lab certified by the state for drinking water.
- Lender panel: ask your lender which tests and who must take the sample.
- Local concerns: the health department knows local issues such as arsenic, nitrates or PFAS.
- Price drivers: the panel, the sampling visit and rush results.
Useful official resources
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EPA: private wells
Official information and guidance.
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EPA: protect your home's water
Official information and guidance.
Services available in Wausau
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Well water test for a sale or loan
Sampling and lab analysis for the panel a lender or buyer requires.
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Comprehensive water testing
Broad panel for bacteria, nitrates, metals, PFAS and other contaminants.
Frequently asked questions in Wausau
How much does well water testing cost in Wausau, WI?
It depends on the panel and whether sampling is included. Describe your needs: pros who serve Wausau reply with a quote.
How long do results take?
Bacteria results often in a few days; full panels longer.
Is my water safe to drink meanwhile?
If in doubt, use bottled water until you have the results.
Which water testing pros will contact me?
Up to three independent water testing pros who serve Wausau and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.