| Business | Phone |
| Alta Loma Mechanical Piping 8306 Bella Vista Dr, Alta Loma 91701 | (909) 987-7955 |
| Applebay Plumbing Alta Loma 91701 | (909) 463-1010 |
| Beacon Plumbing 6397 Pyrite Pl, Alta Loma 91737 | (909) 772-4013 |
| Ora Berg Alta Loma 91701 | (909) 980-4109 |
| Cucamonga Plumbing Co 9083 Sunflower Ave, Alta Loma 91701 | (909) 944-6612 |
| Michael Dunn 5939 Dartmouth Ave, Alta Loma 91737 | (909) 980-0644 |
| Inland Plumbing & Rooter Inc 7201 Haven Ave # 373, Alta Loma 91701 | (909) 987-3305 |
| Jay Indeck Plumbing 6906 Eastwood Ave, Alta Loma 91701 | (909) 484-3231 |
| Norstar Plumbing & Engineering 8780 19th St # 310, Alta Loma 91701 | (909) 481-9488 |
| Dunn Plumbing Heating & A/C 5939 Dartmouth Ave, Alta Loma 91737 | (909) 980-0644 |
| Econo Rooter 7116 Amethyst Ave, Alta Loma 91701 | (909) 877-1600 |
| Plumb Rite 10915 Hillside Rd, Alta Loma 91737 | (909) 941-1515 |
| Scott Mc Leod Plumbing Alta Loma 91701 | (909) 980-6283 |
| Thisle Plumbing 5536 Jasper St, Alta Loma 91701 | (909) 941-1457 |
| Valley Rooter & Plumbing 7116 Amethyst Ave, Alta Loma 91701 | (909) 980-3953 |
| Waterworks Plumbing 6714 Pasito Ave, Alta Loma 91701 | (909) 908-8199 |