Metropolitan Water Reclamation District of Greater Chicago

Recovering Resources, Transforming Water

Protecting Our Water Environment

Established in 1889, the MWRD is an award-winning, special purpose government agency responsible for treating wastewater and managing stormwater in Cook County, Illinois. We strive to be a responsive neighbor that engages with the public on several critical water-related issues that improve the quality of life for all.

Pervious Pavement Ribbon Cutting

Stormwater Partnerships

Local governments and public agencies can apply now for funding to build or design stormwater projects.

Overflow Action

You can help reduce basement backups and flooding by conserving water before, during and after rainstorms.

A crane lifting a large chemical storage tank into position at a water treatment facility with the Chicago skyline visible in the distant background

Procurement and Materials Management

The Procurement and Materials Management Department issues many contracts during the year to purchase a wide range of materials, services and equipment for the MWRD.

A rain barrel on a wooden stand next to a house with a hose running to a tree

Rain Barrels

We have rain barrels for sale for a low price, delivery included. Rain barrels capture rainwater from your roof and save it for later use.

Tunnel and Reservoir Plan (TARP) reservoir levels

Tunnel and Reservoir Plan, also known as TARP or "The Deep Tunnel," is a system of deep, large diameter tunnels and vast reservoirs. TARP is designed to reduce flooding, improve water quality in Chicago area waterways and protect Lake Michigan from pollution caused by sewer overflows.

See water levels at the three TARP reservoirs

Join our team!

We are accepting applications now for a wide range of job categories.

Find out more

You can help prevent flooding and protect water quality!

Native Landscaping

Native landscaping can help reduce flooding, protect water quality and provide habitat for wildlife.

Rain Barrels

We have rain barrels for sale for a low price, delivery included. Rain barrels capture rainwater from your roof and save it for later use.

Green Infrastructure

Capturing stormwater where it falls through natural systems and permeable surfaces.

Medication Disposal

When not disposed of properly, pharmaceuticals can end up in waterways. You can help keep pharmaceuticals from entering our waterways by disposing of unwanted medicine properly at the locations listed on this page.

Videos

Recent News Releases

Cook County mayors and local leaders strengthen communication and coordination on flood preparedness at Government to Government Workshop

November 10, 2025

Presentation topics at the workshop covered the MWRD’s stormwater management partnership programs, state emergency coordination framework, public health and community resilience, flood insurance coverage and consumer protections.

"‘It’s magnificent’: How a dam-free Salt Creek, Fullersburg Woods have been revitalized," The Daily Herald

November 10, 2025

The project was the result of a partnership between the forest preserve district and the DuPage River Salt Creek Workgroup. The funds for the roughly 9ドル.5 million cost were raised from local wastewater treatment entities, including the Metropolitan Water Reclamation District of Greater Chicago.

MWRD Board of Commissioners to meet Thursday, November 6 at 10:30 A.M.

November 4, 2025

Board meetings are open to the public and can be streamed online.

MWRD FLOW - November 2025

October 31, 2025

For The Love of Water (FLOW) is a summary of news from the Metropolitan Water Reclamation District of Greater Chicago.

View all news

Projects

Harvey Central Park Stormwater Detention Basin

The MWRD's Harvey Central Park Stormwater Detention Basin project will provide flood relief for the city of Harvey. This project will reduce flooding to approximately 209 homes during a 100-year storm event.

Addison Creek Reservoir and Channel Improvements

The 600-acre-foot Addison Creek Reservoir will hold 195 million gallons of storage capacity and connect with the Addison Creek Channel to protect the communities from overbank flooding.

Robbins Heritage Park and Midlothian Creek Restoration Project

The MWRD’s Robbins Heritage Park and Midlothian Creek Restoration Project will help address overbank flooding through a new stormwater park and pond, along with improvements to Midlothian Creek and an overflow channel that connects to the Cal-Sag Channel.

Mount Prospect Stormwater Projects

The MWRD worked with the village of Mount Prospect to transform two beautiful park spaces that can now accommodate more stormwater and protect the community from flooding, while also giving the residents a place to gather and play.

View more projects