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Wastewater Collection & Treatment System


Treatment Plant Page 03

The City of Chattanooga Wastewater Department is comprised of four divisions:  Liquids Handling, Solids Handling, Pump Stations and Plant Maintenance.

Liquids Handling:  The Moccasin Bend WWTP is a major regional treatment facility that processes both liquids and solids in the wastewater 24 hours/day, 365 days/year.  It is designed to treat 140 MGD (million gallons/day) with a peak hydraulic capacity of 220 MGD.

Solids Handling:  The Moccasin Bend WWTP produces approximately 70,000 wet tons of biosolids per year.  The solids handling portion of the plant includes the following unit processes:  sludge blending, chemical conditioning and sludge dewatering (filter press and centrifuges).  The combination of these processes reduces the solid pollutants and by-products removed from the liquids processes to a suitable form for disposal.  The biosolids are land applied.

Plant Maintenance:  The Plant Maintenance staff is responsible for all maintenance activities (mechanical, electrical, buildings and grounds) associated with the liquids and solids treatment processes at the wastewater treatment plant and the remote wastewater and stormwater pumping stations.  The Interceptor Sewer System has a maintenance program that includes predictive, preventive and corrective maintenance.  A computerized data management system is used for scheduling and documenting maintenance activities.    

1979 MBWWTP 








Billing questions should be directed to 311.

Regarding Sewer Credits
(423) 643-7400 (Industrial/Commercial Only)

Regarding Water Bill
TAWC 866-736-6420
Hixson Utility (423) 877-3513

Regarding New Industry Location
Pretreatment Supervisor (423) 643-7400

To report leaky manholes, sewer leakage, or other sewer complaints, call 311 or for cell phones (423) 643-6311.

Regarding Sewer Location
(423) 643-7400

Regarding Sewer Taps
(423) 643-7400

Should you have a problem with your sewer line, call 311 before you call a plumber. There could be a problem with the main line and this could save you a plumbing bill.

Swimming pool credits are no longer issued per Ordinance 11884.