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Private Wells

People with private wells need to make sure that their water quality is safe. To assure this, private well owners need to test their water annually.

Why & When to Test Well Water

You should test your well water every year for coliform bacteria, nitrates and any contaminants of local concern. Water should be tested if you notice any change in taste, odor or appearance or after flooding.


For more information on getting your well water tested, contact Public Health - Madison & Dane County at (608) 266-4821. The Public Health laboratory can also recommend other tests that you might want to have run on your water, depending on your well's location, age, etc.

Well Maintenance

For basic information about well water system maintenance, see Tips on Maintaining Your Well (PDF). Information is also provided on Disinfecting Contaminated Wells (PDF).

Well Permits

For more information about obtaining a private well permit, contact Public Health - Madison & Dane County at (608) 242-6515. For well inspection fees, see Well & Septic Program Fee Schedule (PDF).

Abandoned Wells

Abandoned or unused wells pose a threat to the safety and quality of ground water drinking water. They can provide a direct pathway for contamination into the aquifer. Dane County residents outside the City of Madison may be eligible for a grant of up to $350 to help with the costs of abandoning their private well. For more information, call (608) 242-6515.

Key Contacts
Obtaining a Private Well Permit: (608) 242-6515

Well Water Testing: (608) 266-4821
Further Information
Unsafe Drinking Water