Certified septic pumping companies in Winneshiek County, IA

✓ 4 companies based in Winneshiek County, from the Iowa DNR Certified Onsite (Time-of-Transfer) Inspector List (retrieved 2026-07-23). Companies based in neighboring counties often serve here too — see the full Iowa list.

Company	Location	Certifications	License #
Colin Ness	Decorah, IA	Inspector	12835
Doug Groux	Decorah, IA	Inspector	8884
Evan Ness	Postville, IA	Inspector	12838
Kyle Mracek	Decorah, IA	Inspector	13063

FAQs

How many certified septic pumping companies are in Winneshiek County?

4 companies in the Iowa DNR Certified Onsite (Time-of-Transfer) Inspector List are based in Winneshiek County as of 2026-07-23. Companies based elsewhere in Iowa also commonly serve the county.

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