Wisconsin Well Water Testing and Treatment Contractors

Find qualified Well Water Testing and Treatment contractors in Wisconsin using our contractor lookup tool. Learn more about NGWA Contractor Certifications here.

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Municipal Well & Pump

Contractors Company
1212 Storbeck Dr
Waupun, WI 53963-9691
(920) 324-3400

Sams Well Drilling Inc

Contractors Company
PO Box 150
Randolph, WI 53956-0150
(920) 326-5193

Hintzke Well Drilling Inc

Contractors Company
N5072 Hintzke Rd
New London, WI 54961-9265
(920) 982-5426

Farago Drilled Wells

Contractors Company
229 Short St
Plainfield, WI 54966
(715) 335-4398

4-D Water and Pump Service LLC

Contractors Company
N 82 W 28160 Marshall Dr
Hartland, WI 53029
(262) 538-4007

Marshall Well Drilling Corp

Contractors Company
3774 State Rd 13
Wisconsin Dells, WI 53965
United States
(608) 253-2751

OC Dynamics, LLC

Contractors Company
9019 W Poplar Dr
Mequon, WI 53097
(262) 302-5866

Ground Source Inc

Contractors Company
3671 Monroe Rd
De Pere, WI 54115-8355
(920) 336-3659

S & K Pump & Plumbing Inc

Contractors Company
20880 Enterprise Ave
Brookfield, WI 53045-5221
(262) 782-7190

Roberts Irrigation Company Inc

Contractors Company
1500 Post Rd
Plover, WI 54467
(715) 344-4747

24/7 Well & Pump Service

Contractors Company
537 Caldwell Ave PO Box 135
Oconto Falls, WI 54154-9564
(920) 848-2407

Luisier Well Drilling Inc

Contractors Company
220 Hank Marks Dr
Oconto Falls, WI 54154-1078
(920) 848-5239

Haupt Well Drilling Inc

Contractors Company
PO Box 136
Auburndale, WI 54412
United States
(715) 652-2236

Nelson Well Service LLC

Contractors Company
55166 Shingle Hollow Rd
Genoa, WI 54632
(608) 689-2941

Oium Well Drilling

Contractors Company
PO Box 96
Strum, WI 54770
(715) 287-3525

Frequently Asked Questions

When should I have my well water tested?

The National Ground Water Association (NGWA) recommends well owners test their water at least annually for bacteria, nitrates, and any contaminants of local concern. More frequent testing should be considered if:

  • There is a change in the taste, odor, or appearance of the well water, or if a problem occurs such as a broken well cap, inundation by floodwaters, or a new contamination source
  • The well has a history of bacterial contamination
  • The septic system has recently malfunctioned
  • Family members or house guests have recurrent incidents of gastrointestinal illness
  • An infant is living in the home, or
  • To monitor the efficiency and performance of home water treatment equipment.

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What can impact groundwater quality?

Forty-seven percent of the United States depend on groundwater for their basic drinking water supply. Having a basic understanding about groundwater quality will help ensure that your well is supplying potable water for your household.

Along with human activities, water quality is affected by a combination of natural processes. Most relate to chemical compositions underground. However, other factors such as biological, physical, and radiological conditions can affect water quality as well.

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How is a well disinfected?

Properly constructed and maintained water well systems are designed to keep microorganisms such as bacteria, viruses, and protozoa from getting inside the well system and into the water. When a water test indicates the presence of microorganisms in a well, disinfection of the well system is recommended along with some level of inspection.

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Wisconsin Groundwater and Water Well Statistics

Groundwater plays an important role in Wisconsin’s economic vitality.

  • Approximately 340,000 known residential wells statewide
  • 997 community water systems use groundwater for 2,249,200 people
  • 943 non-community, non-transient water systems use groundwater for 201,400 people
  • 9,629 non-community, transient water systems use groundwater for 739,800 people
  • 5,170 irrigation wells used serving 1,850 farms and 429,000 acres

Well Water Testing and Treatment Articles and Resources

Does My Water Well Need Treatment? By Gary L. Hix, R.G., CWD/PI Have you ever asked yourself: “Does my well water need treatment?” The question is not one you can answer if you have not had your water tested recently. You should ask yourself instead: “When was the last time I had my water tested?” If the answer to this question […]

PFAS and Private Well Owners: What You Need to Know NGWA published PFAS and Private Well Owners: What You Need to Know, a two-page fact sheet for home owners concerned about PFAS. Written in easy-to-understand language by groundwater professionals, it explains what PFAS are, how to test wells for PFAS, treatment options, and more.