WSA Engineered Systems, formerly known as Water Services of America, Inc., has been incorporated since 1971. With thousands of systems installed globally, WSA is a world-class leader and single most authoritative source for mechanical on-line Automatic Tube Cleaning, Automatic Backwash and Water Filtration Technologies. Our commitment is to deliver permanent solutions to problems of macro and micro fouling of hydraulic systems common to many industries including: HVAC / commercial, power generation, petrochemical/refinery, industrial.