Renforth Lagoon Wastewater Treatment Plant, Rothesay, New Brunswick

Renforth Lagoon is a wastewater treatment facility located in the Town of Rothesay, Kings County, New Brunswick, Canada. The plant serves a population of approximately 2,450 residents and is situated near the Kennebecasis River, a tributary of the Saint John River. As a lagoon-based system, it provides primary treatment for municipal wastewater. The plant operates under Canada's federal wastewater regulations, specifically the Wastewater Systems Effluent Regulations (WSER), which set national effluent quality standards for all wastewater systems serving over 100 people. For a small community of this size, lagoon treatment is a common and cost-effective approach, often achieving secondary-equivalent treatment through natural biological processes over extended retention times. The treated effluent from Renforth Lagoon discharges into the Kennebecasis River, which flows into the Saint John River and eventually reaches the Bay of Fundy. The Bay of Fundy is known for its extreme tidal ranges and rich marine ecosystem, including critical habitats for migratory birds and fish species. The plant's location within 50 km of the coast underscores the importance of effective treatment to protect downstream aquatic environments.

Renforth Lagoon discharges into the Kennebecasis River, a tributary of the Saint John River, which flows into the Bay of Fundy. The Bay of Fundy is a globally significant marine ecosystem with extreme tides and diverse habitats supporting fish, seabirds, and marine mammals. The plant's proximity to this sensitive coastal environment necessitates effective treatment to minimize nutrient and pathogen loading.