D & D Advanced Water Technologies
Phone: (443) 532-1728 · https://www.ddadvancedwater.com
Pump installer licenses
| License holder | License # | Type | Expires |
|---|---|---|---|
| Hayden L. Gribble | API142 | APPRENTICE PUMP INSTALLER | 2027-06-01 |
Other state licenses held
| License holder | License # | Type | Expires |
|---|---|---|---|
| Donnie L Gribble | MSD192 | MASTER WELL DRILLER - WATER SUPPLY | 2027-06-01 |
✓ How this was verified: license data comes directly from
the Maryland State Board of Well Drillers — Active Licensees roster, dated 2026-07-01 and retrieved
2026-08-03. Check the
official roster (PDF) or call the
State Board of Well Drillers at 410-537-4466
to confirm a license is still active before hiring.