GroundRosterMark Claassen
| Name | Mark Claassen |
| License number | 1899 |
| License type | Certified Well Driller |
| License status | Certified — Iowa DNR |
| Based in | Parkersburg, Iowa |
| Phone | (563) 578-1130 |
"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
- Drilling / construction: licensed to bore, case, complete, and plug water wells.
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 #1899 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Iowa Dept. of Natural Resources (DNR), last checked 2026-08-17. Verify at the official source.
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