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Water and Waste Department

Combined Sewer Overflow (CSO) Annual Results

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Last updated: June 26, 2025

Did you know?

Service crews with the Wastewater Services, Local Sewer Branch work from 7 a.m. to 6 p.m., 7 days a week, 364 days a year? They work on all holidays except Christmas Day. These are the staff that respond to sewer backups, plugged catch basins, missing manhole covers and street flooding. So, when you see these staff working on a weekend or on a holiday, you'll know they are not working overtime – they are simply working their regular shift.

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