Nicollet County Water Department

Find Nicollet County Minnesota water departments, districts, authorities, boards, and services. Water departments provide information on drinking water, treatment plants, sewage treatment, water conservation, and testing.


Le Sueur Water Department 1500 Commerce St Le Sueur MN 56058 507-593-8370


Nicollet County Water Department 424 South Minnesota Avenue St. Peter MN 56082 507-931-2550

North Mankato Water Department 1885 HOWARD Dr North Mankato MN 56003 507-625-7129

About Nicollet County Water Departments

The Nicollet County Water Department or Water Utility is a government agency or private company that operates a public water system, which provides potable tap water directly to residential, commercial, industrial, and institutional customers in Nicollet County, MN.

You may contact the Water Department for questions about:
  • Water utility bills and payments
  • Nicollet County drinking water
  • Drinking water quality testing and safety
  • Water treatment facilities in Nicollet County, MN
Nicollet County Water Utility Companies

Water Departments in Nicollet County operate as an utility and are self-sustaining operations funded through user fees. Nicollet County water rates may be subject to approval from a state regulatory authority such as a Minnesota Public Service Commission or Utility Control Authority.

Public Drinking Water

Water Departments, or Water Companies in Nicollet County typically own the sources of drinking water they provide and must manage and maintain those sources and their surrounding areas. Surface sources include reservoirs, lakes, and rivers. Nicollet County groundwater sources can be found in pockets beneath the ground, which can be accessed by drilling wells. Maintenance of Nicollet County drinking water source sites and limitations on permitted activity around water sources helps minimize contamination. However, drinking water requires treatment prior to distribution to customers.

Water Treatment Facilities in Nicollet County, MN

Nicollet County water treatment facilities are used to remove contaminants and make drinking water safe for consumption. Treatment of water begins with the removal of the larger particles in the water through processes known as coagulation, flocculation, and sedimentation. After the large particles are removed, water is filtered through materials such as sand, gravel, and charcoal to remove dissolved particles. The final stage of treatment involves disinfection using chemicals or ultraviolet irradiation. Nicollet County Water Departments may add fluoride to water at this stage as part of a community health effort to support oral health in the general population. Water Departments are responsible for the day-to-day operations and maintenance of Nicollet County water treatment facilities. Equipment must also be periodically replaced and treatment processes may also be periodically upgraded.

From the treatment plant, water reaches its customers through a distribution system consisting of pipes, referred to as water mains, storage tanks, and pumping stations. Individual customers connect to water mains to bring public drinking water directly to their properties in Nicollet County, Minnesota.

Water Testing in Nicollet County

Water Companies typically have a laboratory or testing division responsible for monitoring the quality of tap water throughout the process, from source to distribution. Minnesota state regulations require Water Utilities to prepare and issue Nicollet County water quality reports to the general public several times per year.