Mark Biskup
License details
| License number | 7900469415 |
| License type | Sewage Treatment System Installer |
| License status | Bonded, Ohio Department of Health, 2026 bond lists |
| Based in | Berlin Center, Mahoning County, Ohio 44401 |
"Based in" is the city and county of the address on the business's license record.
What this license covers
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
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 #7900469415 directly with the agency that issued it, confirm it is still active, and ask for a current certificate of insurance.
Source: Ohio Department of Health - Sewage Treatment System Bond Lists, last checked 2026-08-17. Look it up at the issuing agency.
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