| Business | Phone |
| San Juan Cahmber Of Commerce 430 N Standard Ave, San Juan 78589 | (956) 783-9957 |
| San Juan City Adm 709 S Nebraska Ave, San Juan 78589 | (956) 702-6414 |
| San Juan City Hall 709 S Nebraska Ave, San Juan 78589 | (956) 702-6400 |
| San Juan City Finance 709 S Nebraska Ave, San Juan 78589 | (956) 702-6409 |
| San Juan City Secretary 709 S Nebraska Ave, San Juan 78589 | (956) 702-6416 |
| San Juan Purchasing Dept 709 S Nebraska Ave, San Juan 78589 | (956) 702-6441 |
| San Juan Sewer Plant 201 W Hall Acres, San Juan 78589 | (956) 787-4313 |
| San Juan Water Collection 709 S Nebraska Ave, San Juan 78589 | (956) 702-6410 |