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Mark Sanford BernLicensed

Licensed septic contractor based in Oneida, Knox County, IL

License details

License number	049-805807
License type	Private Sewage Installation License
License status	Active, IDPH licensed private sewage contractor
Based in	Oneida, Knox County, Illinois 61467

"Based in" is the city and county of the address on the business's license record.

How to verify this license

We publish the license details exactly as they appear in the public licensing records of the agency that issued the license; we do not vouch for the business itself. Before hiring, look up license #049-805807 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.

Source: Illinois Dept. of Public Health - Private Sewage Installation & Pumping licence lookup, last checked 2026-10-03. Look it up at the issuing agency.

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See every listing based in Knox County or in Oneida.