The WWOA is comprised of over 2,000 wastewater treatment plant professionals serving municipalities and industries throughout the State. The organization members pride themselves on the efficient, non-polluting operation of the Wisconsin wastewater treatment facilities. Since 1967, the Wisconsin Wastewater Operator's Association has helped educate the state's treatment plant operators, preparing them to make decisions which will insure harm does not come to the quality of the state's water resources.