Statewide chloride resources

Tools and materials for partners and stakeholders interested in minimizing the impact of chloride on Minnesota lakes, rivers, and groundwater.

Reports and guidance

MPCA technical reports

Other technical reports

Chloride working group reports (wastewater)

The MPCA formed a work group of eight city representatives and two consulting engineers to study the problem of chloride in wastewater. Learn more:

MPCA surface water monitoring guidance

MPCA direct assistance

The MPCA administers several programs that can assist organizations looking to address salt use and chloride pollution:

  • Minnesota GreenCorps – Places AmeriCorps members with host organizations around the state to assist with a variety of environmental efforts, including reducing salt use and minimizing chloride pollution
  • GreenStep Cities – A free, voluntary challenge, assistance, and recognition program to help cities achieve their sustainability and quality-of-life goals. Reducing salt use is one of the recommended best practices.
  • Small Business Environmental Assistance – MPCA's program for helping small businesses meet regulatory obligations and reduce their impact on the environment.
  • Clean Water Partnership loans - MPCA offers zero-interest loans to local government and tribal communities to implement practices that reduce non-point sources of chloride pollution.

Water softening rebate guide - New!

The MPCA partnered with the Nine Mile Creek Watershed District, TetraTech, several local cities, watershed organizations and local water treatment professionals to develop guidance for communities interested in developing and implementing a rebate program to reduce chloride from home water softeners. This first of its kind guide includes valuable information, resources and specific examples for implementing a successful water softening rebate program.

Model ordinances for chloride reduction - New!

The MPCA partnered with the Nine Mile Creek Watershed District, TetraTech, several local cities and watershed organizations to develop a suite of model ordinances that communities can choose to implement. There are several options to consider which are intended to assist with reducing salt pollution.

Economic analysis: Addressing chloride in wastewater

For communities working to reduce chloride in their wastewater discharges, the MPCA has developed an economic analysis of the potential solutions. It also provides useful information for municipal decision-makers, such as city councils and city managers.

Example regulatory rules, policies, and ordinances

Several organizations have implemented various rules, polices and ordinances to reduce salt pollution in their community.

Model snow and ice policies

The model snow and ice policy is designed to help county and city governments adopt winter maintenance policies that include protecting the environment among their goals.

Sample policies

Model winter maintenance contract

The city of Edina developed a model contract for snow and ice management that embraces best practices to minimize environmental impacts from salt and other chemicals. Property owners can adapt the model contract to suit their needs and to ensure their contractors are protecting Minnesota waters from chloride pollution.

Educational resources

Resources for organizations engaged in education and outreach on chloride pollution.


Posters, postcards, and other printables

News stories and press releases

Water softening resources

Other resources