South Sewage Treatment Plant (SSTP) FAQs

Get answers to frequently asked questions about Castlegar’s South Sewage Treatment Plant (SSTP).

Municipal Services

Most of the nuisance odours from the SSTP are generated in the solids or sludge management system. This is caused by the breakdown or decomposition of organic material under anaerobic (lack of oxygen) conditions. Sludge that is dewatering in the Geotubes is high in organics. When the Geotubes are being filled or excavated out, significant odours can be prevalent.

Staff are working with technical experts to improve performance and are exploring the viability of other biosolids dewatering solutions, which could help reduce odours.

The South Sewage Treatment Plant is part of the City’s broader Liquid Waste Management Plan, which establishes a long-term approach to managing wastewater, biosolids, and stormwater.

For more information, see Liquid Waste Management Plan.

Residents can email sstp@castlegar.ca or call 250-365-5979.

South Sewage Treatment Plant (SSTP) FAQs

Municipal Services

What causes odours at the South Sewage Treatment Plant (SSTP)?

What actions is the City taking to address the management of biosolids and the odour problem?

How does this issue connect to the City’s long-term Liquid Waste Management Plan (LWMP)?

How can residents ask questions or report concerns about the South Sewage Treatment Plant?

How can residents ask questions or report concerns about the South Sewage Treatment Plant?