Vessco Holdings is a family of water treatment companies focused on becoming the best and biggest water treatment distributor in the country. By partnering with over 250 professionals, in more than 18 states across the U.S., we offer comprehensive coverage of every market segment of the water and wastewater treatment industry. Our partner companies include Vessco, Inc., Mellen & Associates, Inc., Dorner Products, LLC, Koester Associates, Sherwood Logan & Associates, Automatic Systems, Kennedy Industries, Frank Olsen Company and Environmental Improvements, Inc.