| Business | Phone |
| Deltrol Controls 2740 S 20th St, Milwaukee 53215 | (414) 671-6800 |
| Drs Power & Control Tech Inc 4265 N 30th St, Milwaukee 53216 | (414) 875-2900 |
| Ge Water & Process Technology 5730 N Glen Park Rd, Milwaukee 53209 | (262) 238-4400 |
| Westover Corp 4860 N Hopkins St, Milwaukee 53209 | (414) 461-1960 |