Public Water Supply District No. 2 of St. Charles County is proud to serve our growing community as the largest public water supply district in Missouri. Established in 1974, our district has expanded to provide safe and reliable water service to more than 42,000 customers and sewer service to nearly 15,000 customers. Located about 30 miles west of downtown St. Louis, we cover roughly 441 square miles across St. Charles and eastern Warren Counties, serving all or parts of Lake St. Louis, O’Fallon, Dardenne Prairie, Weldon Spring, Wentzville, New Melle, Defiance, Foristell, Wright City, Innsbrook, Dutzow, and Augusta.

Our dedicated team of 18 employees works hard to ensure dependable service and a positive experience for every customer. From billing and collections to engineering and capital projects, we’re committed to maintaining high-quality water and sewer systems that support the health, safety, and growth of our communities. Public Water Supply District No. 2 takes pride in being a trusted part of everyday life, delivering clean water today and investing in the infrastructure that will serve future generations.