Thank you very much for that question.
As I've mentioned previously, the responsibility for providing clean, safe and reliable drinking water to the public generally rests with the provinces and territories, and municipalities generally oversee the day-to-day operations of the treatment facilities.
Through the application of treatment facilities, municipalities, in close collaboration with provinces, territories and the federal government, do provide mechanisms to reduce pollutants that may be introduced into drinking water supplies, including those that may be introduced through waste-water effluent discharges.