The department’s Public Drinking Water Branch has the important mission of ensuring Missouri’s more than 2,700 public water systems provide safe drinking water to every resident and visitor in the state. To do this, the branch monitors for contaminants, issues permits for new and existing public water systems, certifies drinking water treatment and distribution operators, supports and promotes water system security, provides support for improving technical, managerial, and financial capacity, and provides funding opportunities for water system improvements. Our aim is to help keep you informed of the quality of Missouri's drinking water.
Construction permits and permits to dispense issued to public water systems
Assistance for public drinking water systems to increase public health protection
List of Certified Chemical Laboratories or learn how to apply to become one online
List of Certified Microbiological Laboratories or learn how to apply to become one online
Public water systems or water operators conducting bacteriological water analysis
