Britannia Water Purification Plant 324-366 2024

Water Treatment Plant at Mud Lake Britannia in Ottawa. Tuesday November 19 2024.

 

The City of Ottawa operates two treatment plants to supply drinking water - Lemieux Island Water Purification Plant (capacity 400ML/d; constructed 1931) and Britannia Water Purification Plant (360ML/d; constructed 1961). The source water for both plants is the Ottawa River. Both plants use identical water treatment processes and have undergone significant expansion and modernization over the years.

 

Raw water enters the treatment plants through large intake pipes that extend into the main flow of the Ottawa River. The treatment process makes use of the "multiple barrier" principle. A series of treatment steps successively remove undesirable substances such as colour, suspended particles, algae, bacteria, and viruses from the water. The purification process in Ottawa consists of the following steps:

 

- coagulation

- flocculation

- sedimentation

- filtration

- primary disinfection

- pH adjustment

- fluoridation

 

(from Ottawa 2023 Annual Report on Drinking Water Quality)

 

Done