| Business | Phone |
| Kinetico Water Processing 970 Detroit Ave # D, Concord 94518 | (209) 931-9361 |
| Nalco Co 1000 Burnett Ave # 430, Concord 94520 | (707) 645-7171 |
| Taylor Made Water Systems Inc 115 Mason Cir # C, Concord 94520 | (925) 943-5222 |
| Water Treatment Depot 115 Mason Cir, Concord 94520 | (925) 363-3465 |
| Zenon Environmental Corp 5051 Commercial Cir # B, Concord 94520 | (925) 246-8190 |
| Aaa Kinetico Water Systems 970 Detroit Ave # D, Concord 94518 | (925) 778-0515 |
| Aqua Pro Water Management 115 Mason Cir, Concord 94520 | (925) 680-1821 |
| Assured Water Products 1221 Hookston Rd, Concord 94518 | (925) 682-7547 |
| Travon Ultraviolet Water 704 Windmill Ct, Concord 94518 | (925) 827-3812 |