Safe potable water supply

Contamination from existing water sources posed a risk to the health of residents. They needed an effective system to ensure a safe potable water supply.

The Village of Telkwa is a small rural municipality in Northwestern British Columbia, along the Yellowhead Highway 16. The 2001 census recorded the population as 1371 people living in 479 dwellings. Contamination from two existing water sources posed a risk to the health of residents. They needed an effective water treatment system to ensure a safe potable water supply.

The water treatment plant consists of mechanical flocculation, clarification by tube settler and dual media filtration. A SCADA system monitors and records the flows and levels in the treatment plant and reports alarm conditions to the operator.

It also includes primary disinfection using UV, secondary disinfection using sodium hypochlorite and a new river intake system with a submersible pump. The choice of disinfection provides protection from changes in protozoan treatment regulations and minimizes disinfection by-product formation.