Leading the Way for Better Water and Wastewater Management at the Lake of the Ozarks At Lake Ozark Water & Sewer, LLC, we believe water is our most precious natural resource. Water is not only necessary forsustaining life and promoting health, it is a vital part of our community. Having clean water is crucial for the Lake of theOzarks area. Accordingly, we take water management very seriously - from protecting its quality and ensuring its availability, to the proper treatment and disposal of wastewater.. Noncommercial Research Organizations,Laboratories-Testing,Business & Personal Services