East Royalty Lagoon - Secondary Wastewater Treatment Plant in Charlottetown, Prince Edward Island

East Royalty Lagoon is a wastewater treatment facility located in Charlottetown, Prince Edward Island, Canada. It serves a population of approximately 1,503 residents and operates as a secondary treatment plant, reflecting the scale of a small community system. The plant provides secondary treatment, which is the standard biological process required for municipal wastewater in Canada under the federal Wastewater Systems Effluent Regulations (WSER). These regulations set national effluent quality standards for systems serving over 100 people, ensuring protection of receiving waters. Treated effluent from the plant discharges into the local watershed, which ultimately drains into the Northumberland Strait. The coastal environment supports diverse marine life, including fish and shellfish, and the plant's operation helps maintain water quality in this ecologically sensitive area.

The plant discharges into the local watershed that flows into the Northumberland Strait, a part of the Gulf of St. Lawrence. This coastal area supports important fisheries and migratory bird populations. The secondary treatment process reduces organic pollutants and suspended solids, helping to protect the marine ecosystem from nutrient enrichment and other impacts.