Municipal water quality reports are required by British Columbia’s Drinking Water Protection Act.
Yes, it’s good enough to drink.
A City of Delta staff annual drinking water quality report for 2021 concludes that, based on test results from this year’s program, Delta’s drinking water met provincial requirements set out in the BC Drinking Water Protection Regulation.
The report notes that staff conducted approximately 1,264 water sample tests from Delta’s drinking water distribution system, which were obtained from 34 sampling stations located throughout the city. Samples were tested on site for temperature, turbidity and chlorine residual, while an additional sample was sent to the Metro Vancouver lab where it was tested for turbidity, chlorine residual, heterotrophic plaque count , total coliform bacteria and E. coli.
In addition, analyzes for metals, vinyl chloride and disinfection by-products were carried out at several sampling sites in the regional district’s water supply distribution network.
Detailed physical and chemical analyzes were also performed on Delta’s artesian well water from the North Delta Watershed Park, which is another drinking water source in the city’s system.
Of the samples taken, none tested positive for E. coli or total coliforms.
The report also notes that in the spring of 2021, Metro Vancouver increased the target pH range and alkalinity for calcium carbonate as part of the regional district’s corrosion control program.
The program aims to increase the alkalinity and pH of water to protect copper pipes and hot water tanks.
The changes do not affect the taste or odor of the water and meet the Guidelines for Canadian Drinking Water Quality, the report adds.
Delta’s water system serves an area of approximately 18,100 hectares, including North Delta, Tsawwassen, Ladner, Tilbury, Annacis Island, Deltaport, Boundary Bay Airport and BC Ferry Terminal.