Sewage Treatment

Chemainus and Crofton

Secondary Process Treatment Plants

• Waste water is pumped to the plant inlet works in the main building and then gravity fed throughout the rest of the process.

• The waste water passes through a screen where large particles and floating particles are removed.

• The effluent then enters an aeration basin where it is mixed with organisms and this is where the majority of treatment occurs.

• The organisms act as the workers in this process to improve the quality of the effluent by removing suspended solids.

• The effluent then enters a secondary clarifier where the organisms are allowed to settle out and the clear effluent passes through to the discharge pipe.

• This process produces a fine quality effluent in addition to a high quality sludge that is full of nutrients.

Sewer Area Maps

Click on the following PDF links to view Sewer Areas in North Cowichan:

South End Sewer Area West

South End Sewer Area East

Chemainus Sewer Area

Crofton Sewer Area