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Onalaska, Wisconsin | Municipal Water Utility Company | Public Service Announcement

The local tap water supplied by Onalaska Waterworks may contain significant contaminants including Chloromethane, Dibromomethane, N-Nitrosodi-N-propylamine and Ethylbenzene, while also experiencing elevated water hardness levels. Onalaska Waterworks provides municipal water to residents sourced from local Groundwater supplies.

What's in your tap water?

Free Official Water Safety Report for Onalaska Waterworks!

US Public Records

Onalaska Waterworks Area Details

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Area served:

Onalaska, Wisconsin

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Population served:

18693

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Water source:

Groundwater

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Phone:

608-781-9530

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Address:

415 Main Street, Onalaska, WI 54650

Wisconsin Dinking Water Utility

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Contaminants Detected In Onalaska, Wisconsin

Bromodichloromethane; Chromium (hexavalent); Dichloroacetic acid; Nitrate; Tetrachloroethylene (perchloroethylene); Total trihalomethanes (TTHMs); Tri… more

Onalaska Dinking Water Utility

Free Official Water Safety Report for Onalaska Waterworks!

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US Public Records

Onalaska Waterworks

Annual Municipal Water Report

List of Municipal Water Contaminants Tested by Onalaska Waterworks

Tested But Not Detected:
1,1,1,2-Tetrachloroethane; 1,1,1-Trichloroethane; 1,1,2,2-Tetrachloroethane; 1,1,2-Trichloroethane; 1,1-Dichloroethane; 1,1-Dichloroethylene; 1,1-Dichloropropene; 1,2,3-Trichloropropane; 1,2,4-Trichlorobenzene; 1,2-Dichloroethane; 1,2-Dichloropropane; 1,3-Butadiene; 1,3-Dichloropropane; 1,3-Dichloropropene; 1,4-Dioxane; 2,2-Dichloropropane; 2,4,5-TP (Silvex); 2,4-D; 3-Hydroxycarbofuran; Alachlor (Lasso); Aldicarb sulfone; Aldicarb sulfoxide; Aldrin; Antimony; Atrazine; Benzene; Beryllium; Bromobenzene; Bromochloromethane; Bromomethane; Butachlor; Cadmium; Carbaryl; Carbofuran; Carbon tetrachloride; Chlorate; Chlordane; Chlorodifluoromethane; Chloroethane; Chloromethane; cis-1,2-Dichloroethylene; Cobalt; Dalapon; Dibromomethane; Dicamba; Dichloromethane (methylene chloride); Dieldrin; Dinoseb; Diquat; Endothall; Endrin; Ethylbenzene; Glyphosate; Heptachlor; Heptachlor epoxide; Hexachlorobenzene (HCB); Hexachlorocyclopentadiene; Lindane; m-Dichlorobenzene; Mercury (inorganic); Methomyl; Methoxychlor; Metolachlor; Metribuzin; Molybdenum; Monochlorobenzene (chlorobenzene); Nitrite; o-Chlorotoluene; o-Dichlorobenzene; Oxamyl (Vydate); p-Chlorotoluene; p-Dichlorobenzene; Pentachlorophenol; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA); Picloram; Propachlor; Simazine; Styrene; Toluene; Total aldicarbs; Toxaphene; trans-1,2-Dichloroethylene; Trichloroethylene; Vinyl chloride; Xylenes (total)

onalaska-waterworks-water-company-wisconsin Office

Discover which contaminants exceed Legal and Health Guidelines in your water supply.

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US Public Records

Onalaska Waterworks

About Us


54650 Annual Water Report

Email

kevin@cityofonalaska.com


Onalaska Waterworks Payment Options

For more Wisconsin resources & information

Wisconsin Water Utility Companies

Educational Information

Our tap water comes from various sources including rivers, lakes, streams, ponds, reservoirs, springs and wells. As water travels across land or underground, it naturally dissolves minerals and can pick up substances from animal presence or human activity. Several categories of potential contaminants include:

  • Microbial contaminants such as viruses and bacteria from sewage facilities, septic systems, agricultural operations, and wildlife
  • Inorganic contaminants including salts and metals that occur naturally or result from urban runoff, industrial discharge, farming, or oil and gas production
  • Pesticides and herbicides from agriculture, urban stormwater runoff, and residential usage
  • Organic chemicals, both synthetic and volatile, which are industrial byproducts and can come from gas stations, urban runoff, and septic systems
  • Radioactive substances that occur naturally or result from energy production and mining activities

To ensure public health safety, the EPA establishes regulations limiting contaminant levels in public water systems, while FDA regulations set similar standards for bottled water products.
Wisconsin EPA Water Reports

For more information on your municipal water, visit the U.S. Environmental Protection Agency:

Onalaska Waterworks Municipal Water Company and EPA

Onalaska Waterworks Municipal Water Report Info

Welcome to Our Community

Welcome to Oconomowoc, home to approximately 16,004 residents, where natural beauty and community effort have created a special place with safe neighborhoods, excellent educational institutions, quality healthcare services, forward-thinking governance, a thriving economy, and exceptional quality of life overall.

Nestled in northwest Waukesha County's rolling, lake-dotted landscape, our region features numerous water bodies and amenities that exemplify why "Life comes naturally here." Oconomowoc, meaning "Where the waters meet," serves as the area's commercial and industrial hub. Established in the 1800s, today's city blends small-town charm with modern opportunities. The historic downtown has experienced revitalization, while Wisconsin's largest planned development rises on the city's outskirts. Supporting business retention and family attraction are municipal services including modern emergency departments, affordable city-owned utilities, and some of the state's lowest tax rates.

Our diverse housing market continues to expand, offering everything from historic lakefront properties and traditional homes to contemporary condominiums and downtown apartments. Undeveloped land remains available for custom home construction with skilled local builders ready to assist. Several elder care facilities and senior housing options meet the needs of our older residents.

Community involvement shows through active participation in local schools, worship centers, and civic organizations. Environmental stewardship and community pride are woven into daily life. Whether you're visiting, seeking to establish roots, or looking to expand your business, discover a promising future in the Oconomowoc area – where "Life comes naturally here."

Municipal Water Utility Company FAQ

Wisconsin CDC Tap Water Info

For more information on your municipal water, visit the U.S. CDC:

Onalaska Waterworks Municipal Water Company and CDC

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Onalaska Waterworks consumer info

Onalaska Waterworks delivers municipal water services to the residents of Onalaska and surrounding areas in Wisconsin.

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Onalaska Waterworks FAQ

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US Public Records

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