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Wastewater Management

The Environmental Services Department operates two wastewater treatment plants, cleans billions of gallons of wastewater each year and maintains more than 700 miles of sewer pipe.


The water that leaves your homes through sinks, showers and toilets flows through sewer pipe to a wastewater treatment plant where it is treated before being released into Commencement Bay.

Learn more about the services we provide and how we can work together to protect the environment and keep our water clean.

Wastewater Programs

The City of Tacoma recommends getting a Private Side Sewer Inspectionif a building is more than 25 years old and/or does not have plastic PVC pipe running from the building to the sewer main.


Resource for Residents (and businesses, too): Is your side sewer in need of repair or replacement? Click here to learn more about the City of Tacoma's low-interest Sewer Conservation Loan Program.


For wastewater questions such as side sewer information, locations of wastewater mains and as-built information, call the City of Tacoma Environmental Services Site Development at (253) 591-5030.


Quick Links

Wastewater Services

Wastewater System

Sewer Backups and Flooding

Wastewater Rates
Permits and Manuals
Education and Involvement Opportunities
What Not to Flush

Grease Goes in the Garbage

Check the code (Municipal Code Title 12, Section 8)
Residential Flooding Brochure


Contact Us

Wastewater Management
2201 Portland Avenue
Tacoma, WA 98421

Sewer Backups
24 hours a day

(253) 591-5585

Billing Questions
(253) 502-2100
8 AM - 4:30 PM

Storm Drain Flooding
24 hours a day

(253) 591-5585

Pollution Hotline

(253) 591-5000 or 311 

Sewer Conservation Loans  

(253) 502-2255

Citizens for a Healthy Bay

(253) 383-2429