GroundRosterMaas Brothers Excavating & Hauling LLC
| Name | Maas Brothers Excavating & Hauling LLC |
| License number | 2509979, 2540337 |
| License type | Sewage Treatment System Installer · Sewage Treatment System Service Provider |
| License status | Bonded — Ohio Department of Health, 2026 bond lists |
| Based in | Ottawa, Putnam County, Ohio 45875 |
| Phone | (419) 788-6066 |
"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.
- Service: licensed to operate and service advanced treatment systems on an ongoing contract.
How to verify this license
We publish the license details exactly as they appear in Ohio's official licensing records; we do not vouch for the business itself. Before hiring, look up license #2509979, 2540337 directly with the state, 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. Verify at the official source.
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