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Metropolitan Water Reclamation District of Greater Chicago
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What We Do
Protecting Water Quality
Wastewater Treatment
What happens at a water reclamation plant?
Fish Species in the Chicago Area Waterway System
Argonne partners with MWRD to study Chicago River microbe population
Nutrient Reduction Research
PFAS
Reducing Flooding
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Lockport Powerhouse
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Centennial Fountain
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Addison Creek Reservoir and Channel Improvements
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You Can Help Prevent Flooding and Protect Water Quality
Combined Sewer Overflow Notification
Flush With Care
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Operation and Maintenance Manual for Separate Sanitary Sewer Systems, MWRD, 1989
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Petition for Variance WMO-VP-17-01
Petition for Variance WMO-VP-21-01
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M & R Seminar March 2025
2025-07-02
M & R Seminar February 2025
2025-07-02
M & R Seminar January 2025
2025-07-02
Tarp Status Report 2025
2025-06-26
Assist Agency List
2025-06-24
7-9-25 Civil Service Board Agenda
2025-06-20
5-21-25 Civil Service Board Meeting Minutes
2025-06-18
OIG Complaint Form 2025
2025-06-18
2024 Annual Clerk's Report
2025-06-09
2025 RD-925 Form, Instructions, and Worksheets (PDF)
2025-06-06
2025 RD-925 Form, Instructions and Worksheets (Excel)
2025-06-06
Report No. 25-21 Odor Monitoring Program for 2024
2025-06-06
Report No. 25-04 Results of Acute Toxicity Testing with Ceriodaphnia dubia and Pimephales promelas on a March 2025 Effluent Sample From the John E. Egan Water Reclamation Plant of the Metropolitan Water Reclamation District (MWRD)
2025-06-05
Report No. 25-03 Results of Acute Toxicity Testing with Ceriodaphnia dubia and Pimephales promelas on a January 2025 Effluent Sample From the James C. Kirie Water Reclamation Plant of the Metropolitan Water Reclamation District (MWRD)
2025-06-05
Report No. 25-02 Results of Acute Toxicity Testing with Ceriodaphnia dubia and Pimephales promelas on a January 2025 Effluent Sample From the Hanover Park Water Reclamation Plant of the Metropolitan Water Reclamation District (MWRD)
2025-06-05
Report No. 25-06 Results of Acute Toxicity Testing with Ceriodaphnia dubia and Pimephales promelas on a April 2025 Effluent Sample From the Hanover Park Water Reclamation Plant of the Metropolitan Water Reclamation District (MWRD)
2025-06-05
Report No. 25-05 Results of Acute Toxicity Testing with Ceriodaphnia dubia and Pimephales promelas on a April 2025 Effluent Sample From the James C. Kirie Water Reclamation Plant of the Metropolitan Water Reclamation District (MWRD)
2025-06-05
Report No. 25-01 Results of Acute Toxicity Testing with Ceriodaphnia dubia and Pimephales promelas on a December 2024 Effluent Sample From John E. Egan Water Reclamation Plant of the Metropolitan Water Reclamation District (MWRD)
2025-06-05
McCook Reservoir Fact Sheet
2025-06-04
Thornton Reservoir Fact Sheet
2025-06-04
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