Well Water Treatment Installers in Wisconsin

Wisconsin has a large private-well population drawing from glacial aquifers and dolomite bedrock, and very hard water with iron and manganese is close to universal in many counties. Nitrate from agriculture is a documented concern in parts of the state, and naturally occurring arsenic and radium occur in some aquifers, so a lab test should guide the treatment design.

Below are 3 Wisconsin well water treatment companies we verified against their own websites, listed alphabetically with any featured (paid) listings first and labeled. Each listing shows the services offered, the areas served and a direct link to the company. Before you request quotes, read the installation guide for what a correct install involves, check the cost guide for typical pricing, and see the best well water filtration systems for the equipment installers commonly use.

All Wisconsin listings

Addie Water Systems Inc.

Janesville, WI

Verified Oct 2026Ratings coming soon

Janesville, WI water treatment dealer offering iron filters for well water (oxidizing iron and sulfur), water softeners, drinking water systems and free water testing in Rock, Dane and Walworth counties. The site states 45 years serving the community.

Services

well water testing
iron filter installation
sulfur removal
water softener installation
drinking water systems
water heaters

Service area: Janesville, Evansville, Edgerton, Rock County, Dane County, Walworth County

Visit addiewatersystems.com Call (608) 755-1031

Guthrie & Frey Water Conditioning, LLC

Hartland, WI

Verified Oct 2026Ratings coming soon

Hartland, WI water conditioning company with a Mequon office and a well pump division in Wales. The site lists water softeners, Iron Curtain filtration for iron, sulfur smell and manganese, reverse osmosis, PFAS and arsenic treatment, water testing and well pump service for Southeastern Wisconsin. The site states it has operated since 1974.

Services

well water testing
iron filter installation
sulfur removal
manganese removal
water softener installation
reverse osmosis
pfas treatment
arsenic treatment
well pump service

Service area: Waukesha County, Ozaukee County, Washington County, Jefferson County, Walworth County, Racine County, Kenosha County, Milwaukee

Visit guthriefreywater.com Call (262) 367-1960

Water Doctors

Waukesha, WI

Verified Oct 2026Ratings coming soon

Waukesha, WI water treatment company and Kinetico dealer. The site lists well water iron filters, sulfur and odor removal, softeners, water testing, UV disinfection and whole-home filtration for Southeast Wisconsin. The site states over 40 years in business.

Services

well water testing
iron filter installation
sulfur removal
water softener installation
uv disinfection
whole-house filtration
drinking water systems

Service area: Waukesha, West Bend, Madison, Southeast Wisconsin

Visit h2odoctors.com Call (262) 549-7733