Welcome to the Wastewater Treatment Plant Wastewater Treatment Plant 800 Hoffmann Drive Watertown, WI 53094 920-262-4085 Wastewater Treatment Staff Peter Hartz - Manager920-262-4085Joe Lehner - Assistant Manager920-262-4085Wastewater General Email920-262-4085 2013 Registered Lab of The Year Mercury Information Fat-Free Sewers Tour the Plant
