| Business | Phone |
| Gretna City Utilities Dept 2nd St & Huey P Long Aveamp;, Gretna 70053 | (504) 363-1560 |
| Gretna Utilities Dept 100 5th St, Gretna 70053 | (504) 363-1542 |
| Utilities Dept-Machine Shop 1101 Burmaster St, Gretna 70053 | (504) 363-1545 |
| Wastewater Treatment Plant 1101 Burmaster St, Gretna 70053 | (504) 363-1551 |