American Public Works Assoc.-Chicago Chapter
www.chicago.apwa.net

American Water Works Assoc.-IL Chapter
www.isawwa-portal.com

National Assoc. of Plumbing, Heating, & Cooling Contractors
www.phccweb.org

Plumbing & Mechanical Contractors Assoc. of Joliet & Will County
www.pmcajoliet.com

Plumbing Contractors Assoc. of Chicago & Cook County
www.pcaofchicago.com

Plumbing Contractors Assoc. of Northwest Indiana
www.pcaofchicago.com

South Suburban Water Works Assoc.
www.sswwa.org

Underground Contractors Assoc.
www.uca.org

Plumbers LU #130 & #422
www.plumberslu130ua.org
www.ualocal422.org

Operators LU #150
www.ivcontractors.org/OE150.htm

Laborers LU #5 & #269

Calumet Area Industrial Commission
www.calumetcitychamber.com

Chicago Southland Chamber of Commerce
www.chicagosouthland.com

Lansing Chamber of Commerce
www.chamberoflansing.com