Your Partner in Clean Water

We are more than just a wastewater treatment plant.

For more than 90 years, Madison Metropolitan Sewerage District has worked to protect public health, the environment and our local waters through innovation, sustainability and resource recovery.

Our most requested

COMMISSION

Find meeting materials and meet our Commissioners

Contracting CENTER

Find current business and contracting opportunities with the District

PHONE NUMBERS

Important phone numbers, hours, maps and more

Be a Salt Saver

Learn how to reduce salt use in your home

CAREERS

Search job opportunities and learn more about our hiring process

District FAQs

Find frequently asked questions and resources here

Project spotlight: WAS blend tank cleaning

September 12, 2023

Our Facilities Maintenance team cleaned the WAS (waste activated sludge) blend tanks and removed a large amount of unflushable wipes and rags.

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Project spotlight: GBT valve replacement

August 1, 2023

Mechanics replace 16 faulty GBT valves in a two-day project at the Nine Springs Wastewater Treatment Plant.

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How the first Commissioners built the District from the ground up

July 13, 2023

In 1930, the District's first Commissioners were appointed by Dane County to oversee an operations with no facilities, employees or money.

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Household items: Environmental poisons

June 1, 2023

When household items from a garage, basement or elsewhere go down the drain, the chemicals and poisons can harm wildlife and the environment.

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Our promise to you

Our Mission

Protect public health and the environment

Our Vision

Enrich life through clean water and resource recovery

Our Ideals

Equitable, reliable and cooperative

Your Partner in Clean Water

Our most requested

Only Flush the 3Ps

Current Construction Projects

Work with Us

Be Water Softener Smart

Take a Virtual Tour

Explore our Wildlife Observation Area

Upcoming Events

Our promise to you

Our Mission

Our Vision

Our Ideals