Walworth County Septic (POWTS) Rules

Routine Maintenance

This page covers regular POWTS pumping and upkeep, not a real estate transaction.

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Walworth County, with its dense lake-cottage housing stock, runs its POWTS program through Land Use and Resource Management, and it is one of the few counties in this state where a homeowner can look up their own system’s maintenance history online without calling anyone.

The maintenance cycle

Every POWTS in the county has to be pumped, inspected, and reported at least every 3 years under the county’s Maintenance and Management Agreement, the document every property owner signs when the system is permitted.

Walworth County Maintenance and Management AgreementVerified Sep 2026

State law requires every Private Onsite Wastewater Treatment System to be pumped, inspected, and reported to the county. Walworth County requires this at least every 3 years under its Maintenance and Management Agreement.

Read the code at co.walworth.wi.us

The online history lookup

Licensed pumpers and maintainers file service records into a county database, and that same database is open to the public: you can look up when your system was last serviced and by whom, without calling the county first. That level of self-service transparency is not common among the counties in this guide.

Fees

The county references a Sanitation Fee schedule for permits and inspections, but the specific dollar amounts are not printed on the public sanitation page itself. Call the department for the current figure before budgeting a permit.

County contact

Walworth County Land Use and Resource Management, Sanitation
100 W Walworth Street, Elkhorn, WI 53121 (mailing: PO Box 1001, Elkhorn, WI 53121)
Main line: 262-741-4972

Frequently asked questions

Can I check my own septic record without calling the county
Yes. Walworth County publishes an online maintenance reporting and history lookup where you can see the last service date and provider for a parcel.
What is the Maintenance and Management Agreement
The document every property owner signs at permitting that commits the property to the county's inspection and reporting cycle, at least every 3 years.
Does a lake cottage on a small lot follow the same rule
Yes, the county's 3-year reporting requirement applies countywide. Lot size can affect what type of system was originally permitted, not the reporting cycle itself.

For the state rule behind this, see Wisconsin septic maintenance rules. Nearby: Jefferson County and Dodge County.

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