| Business | Phone |
| Aps Co 1401 Hanna Rd, Spring 77380 | (281) 367-4462 |
| Montgomery County Wcid 23802 Glen Loch Dr, Spring 77380 | (281) 367-0303 |
| Montgomery County Wcid #1 25611 Spreading Oaks Dr, Spring 77380 | (281) 367-0969 |
| Municipal Operations 230 Spring Hills Dr 325, Spring 77386 | (281) 367-5511 |
| Rayford Road Mud 1825 Ashton Village Dr, Spring 77386 | (281) 419-7554 |
| Southern Montgomery County Mud 25212 Interstate 45, Spring 77386 | (281) 367-5383 |
| Woodland Joint Powers Ag 2455 Lake Robbins Dr, Spring 77380 | (281) 367-1271 |
| Woodlands Waterworks Inc 2434 Sawdust Rd, Spring 77380 | (281) 367-3362 |
| Z Waterworks 18351 Kuykendahl Rd 405, Spring 77379 | (281) 992-4261 |
| Eagle Water Management Inc 5118 Spring Cypress Rd, Spring 77379 | (281) 374-8989 |
| Enviro-Management 2424 Sciaaca Rd, Spring 77373 | (281) 353-9479 |
| M Marlon Ivy & Assoc 6450 Louetta Rd, Spring 77379 | (281) 376-8117 |
| M Marlon Ivy & Assoc Inc 19333 Haude Rd, Spring 77388 | (281) 651-1618 |
| Harris County Municipal Dist 16030 T C Jester Blvd, Spring 77379 | (281) 537-2279 |
| Harris County Water Control 19023 Joanleigh Dr, Spring 77388 | (281) 353-0998 |
| Hays Utility Svc Corp 2200 Sciaaca Rd, Spring 77373 | (281) 353-9756 |
| Hydro Tech Svc 23006 Pilgrims Gate Ln, Spring 77373 | (713) 540-1084 |
| N W Harris County Mud 3510 Spring Cypress Rd, Spring 77388 | (281) 528-9699 |