| Business | Phone |
| Duson Sewage Treatment Plant 209 Betty Ann St, Duson 70529 | (337) 873-4375 |
| Duson Sewer Dept 209 Bettyann St, Duson 70529 | (337) 873-8014 |
| Duson Town Office 300 2nd St, Duson 70529 | (337) 873-9899 |
| Duson Water Plant 814 1st St, Duson 70529 | (337) 873-4375 |