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COLE Publishing is a privately held company with offices inWisconsin andMinnesota. The company creates nine highly focused trade publications for the liquid waste and environmental wastewater industries. Its titles includePumper,Cleaner,PRO (Portable Restroom Operator),Onsite Installer,Municipal Sewer & Water (MSW),Treatment Plant Operator (TPO),Gas, Oil & Mining Contractor (GOMC),digDifferent andPlumber print and online magazines. The company also founded the annualWWETT (Water & Wastewater Equipment, Treatment & Transport) Show, formerly thePumper & Cleaner Environmental Expo International, the world’s largest annual trade show for environmental service professionals, and one of the fastest growing trade shows in theUnited States attracting over 14,000 visitors from more than 50 countries.^[1] The WWETT Show was sold to Informa Exhibitions in February 2016.

COLE Publishing was founded by Bob Kendall and Pete Lawonn in June 1979. Lawonn pumpedseptic systems and had a spare 2,000-gallon vacuum tank he needed to sell, but no effective way to market it. Word-of-mouth andnewspaper advertising didn’t seem like the best ways to reach contractors who might be interested in his product. The late John DiVall of Jay’s Waste Equipment advised them that there was a need for an industry trade journal. Taking the advice to heart, Kendall and Lawonn began publication. The first issue ofMidwest Pumper was mailed to 2,500 contractors in eight states. Today,Pumper is the flagship magazine for COLE Publishing andCOLE Inc.^[2]

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