| Business | Phone |
| Public Works & Water Resources 8900 Jimmy Wedell Dr, Baton Rouge 70807 | (225) 274-4171 |
| Water Resources 8900 Jimmy Wedell Dr, Baton Rouge 70807 | (225) 274-4172 |
| Water Resources Information 8900 Jimmy Wedell, Baton Rouge 70807 | (225) 274-4325 |
| Us Env Protection Agency 6100 Corporate Blvd, Baton Rouge 70808 | (225) 925-8490 |