Sydney draws municipal drinking water from Middle Lake Road Wellfield / Sydney Wellfield (fractured bedrock; ~11 production wells), treated at CBRM Sydney Water Treatment Plant (Middle Lake Road Wellfield).
Ask where Sydney drinking water begins and the answer is Middle Lake Road Wellfield / Sydney Wellfield (fractured bedrock; ~11 production wells), then CBRM Sydney Water Treatment Plant (Middle Lake Road Wellfield). That supply chain is what the water atlas puts beside hardness and lead.
CBRM lists a distinct Sydney treatment plant serving Sydney, Coxheath, Westmount, Sydney River, Grand Lake Road, Mira Road, Membertou, South Bar, Prime Brook, and Pine Tree Park. Wellfield commissioned 1996 to replace Sydney’s former five-lakes surface supply. Pottle Lake membrane plant serves Northside only, not downtown Sydney.
See the Sydney water page for the grade, source notes, and municipal report links.