Maas & Sons

Licensed septic contractor based in Waterford, Racine County, WI

"Based in" is the city and county of the address on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.

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What this license covers

• Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
• Inspection: licensed to inspect existing septic systems; the license you want for a home-purchase inspection.

How to verify this license

We publish the license details exactly as they appear in Wisconsin's official licensing records; we do not vouch for the business itself. Before hiring, look up this license directly with the state, confirm it is still active, and ask for a current certificate of insurance.

Source: Walworth County POWTS Program, last checked 2026-08-19. Verify at the official source.