GroundRosterJoshua C JohnstonLicensed
| Name | Joshua C Johnston |
| License number | 1940001236, 1942001084, 1944001257 |
| License type | Master Alternative Onsite Sewage System Installer · Master Alternative Onsite Sewage System Operator · Master Alternative Onsite Soil Evaluator |
| License status | Current |
| License expires | 2028-01-31 |
| Based in | Culpeper, Culpeper County, Virginia 22701 |
"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
- Site testing: licensed to run percolation tests and evaluate soils to determine what kind of system a site can support.
- Installation / repair: licensed to build and install septic tanks and drainfields, and to repair or replace failed ones.
- Operation: licensed to operate and monitor onsite sewage systems; alternative systems typically require a licensed operator under an ongoing service contract.
How to verify this license
We publish the license details exactly as they appear in Virginia's official licensing records; we do not vouch for the business itself. Before hiring, look up license #1940001236, 1942001084, 1944001257 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Virginia Department of Professional and Occupational Regulation (DPOR) - regulant list, last checked 2026-08-16. Verify at the official source.
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