| Business | Phone |
| Aire Serv Of The River Cities 2001 Clovis Barker Rd, San Marcos 78666 | (210) 375-2653 |
| Roto-Rooter Plumbing & Drain San Marcos 78666 | (512) 392-5005 |
| Texas State Plumbing Co 1517 Aquarena Springs Dr, San Marcos 78666 | (512) 878-1392 |
| Kelvin Mills Plumbing Po Box 1552, San Marcos 78667 | (512) 353-4442 |
| L & K Heating & Air Cond Po Box 1232, San Marcos 78667 | (512) 396-6222 |