| Business | Phone |
| Aqua Coolers 5844 W Higgins Ave, Chicago 60630 | (773) 283-0078 |
| Aqua Therm Inc 3900 W Fullerton Ave, Chicago 60647 | (773) 342-6118 |
| Aquaworld Usa 5419 N Lincoln Ave, Chicago 60625 | (773) 769-4882 |
| G E Water & Process Tech Chicago 60625 | (773) 343-9493 |
| G & S Industrial Maintenance 4133 N Kedvale Ave, Chicago 60641 | (773) 283-7392 |
| Environmental Futures Inc 2210 W Irving Park Rd, Chicago 60618 | (773) 539-3410 |
| Environmental Service Contr 1620 N Throop St, Chicago 60622 | (773) 252-1607 |