| Business | Phone |
| Safety-Kleen Systems 2200 S West Ave, Waukesha 53189 | (262) 549-3011 |
| Fluid Service 411 Travis Ln, Waukesha 53189 | (262) 547-1055 |
| Psi W228n727 Westmound Dr A, Waukesha 53186 | (262) 970-9022 |
| Indoor Environmental Cnsltnt Waukesha 53186 | (262) 894-2050 |
| International Environmental Waukesha 53188 | (262) 574-1225 |
| Jenn Industries Llc 21675 Doral Rd # C, Waukesha 53186 | (262) 717-0808 |
| Matrix Technologies 111 Wilmont Dr C, Waukesha 53189 | (262) 542-5029 |