Shilling Excavating, INCLicensed

Licensed septic contractor based in Knoxville, IA

"Based in" is the city 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

• Pumping / cleaning: licensed to pump out and clean septic tanks, service them, and haul the waste.

How to verify this license

We publish the license details exactly as they appear in Iowa's official licensing records; we do not vouch for the business itself. Before hiring, look up license #423 directly with the state, confirm it is still active, and ask for a current certificate of insurance.

Source: Iowa Dept. of Natural Resources (DNR) - Licensed Septic Tank Pumpers, last checked 2026-08-18. Verify at the official source.