| Business | Phone |
| Sellman Enterprises Inc 600 South Loop 4, Austin 78704 | (512) 445-5489 |
| Smiley Septic & Design Inc Austin 78759 | (512) 797-4959 |
| Necessary Inc 1005 Lund St, Austin 78704 | (512) 445-2250 |
| Kim Geary Austin 78704 | (512) 416-0217 |
| Bill Sanchez Plumbing & Septic 9111 Old Lampasas Trl, Austin 78750 | (512) 258-7777 |
| Drip-Tech Wastewater Systems 3534 Bee Cave Rd, Austin 78746 | (512) 329-0066 |
| Dunne Co 1706 S Lamar Blvd, Austin 78704 | (512) 462-9933 |
| Rainbow Septic 2903 Terrain Ln, Austin 78731 | (512) 380-9024 |
| Funke General Contractors 3917 Double Dome Rd, Austin 78734 | (512) 266-2847 |
| Iron Harbor Properties 2509 Gardenia Dr, Austin 78727 | (512) 339-1516 |
| John Pate Construction Inc 15101 Debba Dr, Austin 78734 | (512) 266-9476 |
| Dick Sanders Highway 290 W, Austin 78736 | (512) 288-1487 |
| T H Works 11208 Pickard Ln, Austin 78748 | (512) 280-6157 |
| Wenzel Engineering 7005 Kenosha Pass, Austin 78749 | (512) 301-7480 |
| Aus Tex Development Austin 78739 | (512) 698-7676 |
| Austin Septic Supply Co 3932 Ranch Road 620 S B, Austin 78738 | (512) 263-1474 |
| Austin's Best Septic 7916 Siringo Pass, Austin 78749 | (512) 301-3224 |
| Snowden On-Site Inc 10908 Ranch Road 2222, Austin 78730 | (512) 338-1804 |
| Tim Teague Contractor 2200 Saratoga Dr, Austin 78733 | (512) 263-5136 |
| Balboa Septic Design 5908 Parkwood Dr, Austin 78735 | (512) 899-2757 |
| Biggs Service Co 5304 Cueva Dr, Austin 78738 | (512) 263-9489 |
| Don Johnson Equipment Rental 10420 Fm 812, Austin 78719 | (512) 243-5209 |