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Water quality challenges in the Elk Valley are connected to the long history of mining in the region. The mining process generates large quantities of leftover rock that contains naturally-occurring substances such as selenium, an element that is essential for human and animal health in small amounts, but which may cause adverse impacts in high enough concentrations. Water from both precipitation and runoff flows through these rock piles and carries selenium and other substances, such as nitrate, into the local watershed.
Developing the Elk Valley Water Quality Plan
In 2013, in consultation with the Government of BC, the Ktunaxa Nation, scientists, and local communities, Teck, as the former operator of EVR, developed the Elk Valley Water Quality Plan, which was approved by the provincial government in 2014. This is a long-term plan with the goal of stabilizing and reversing the trend of selenium, calcite and other constituents and improving the health of the watershed, while at the same time allowing for continued sustainable mining in the region.
Implementing the Elk Valley Water Quality Plan
EVR has made significant progress implementing the Elk Valley Water Quality Plan. Water treatment facilities are operating now that are successfully improving water quality with more facilities planned and under construction.
Our first water treatment facility is successfully treating up to 7.5 million litres of water per day at our Line Creek Operations and we are seeing reductions in selenium and nitrate concentrations downstream.
Our second water treatment facility, the Elkview Saturated Rock Fill, was expanded in 2020 and is now treating up to 20 million litres of water per day.
Our third water treatment facility, the Fording River South Water Treatment Facility, is also operating with capacity to treat up to 20 million litres of water per day.
Our fourth water treatment facility, the Fording River North Saturated Rock Fill, completed commissioning in December 2023 and has capacity to treat up to 30 million litres of water per day.
Since the creation of the Elk Valley Water Quality Plan, $1.4 billion has been invested towards water quality monitoring, management, research and construction of four treatment facilities to date.
Increasing water treatment capacity
We have constructed four water treatment facilities to date with capacity to treat 77.5 million litres of water per day, a four-fold increase from treatment capacity in 2019. We are constructing six additional water treatment facilities and we expect to further increase our water treatment capacity by 2027 to 150 million litres per day.
Water quality monitoring
EVR is required to conduct monitoring at over 150 water quality locations and over 100 biological monitoring stations in the Elk Valley and within the Koocanusa Reservoir. The purpose of this monitoring is to evaluate water quality and to allow for the early detection of emerging water quality concerns. Monitoring results are used to inform management decisions and support the protection of aquatic and human health. Find water quality monitoring here.
Fish population monitoring
EVR works with external registered professionals to undertake fish population monitoring. The most recent results show a positive fish population trend in the Upper Fording River, located immediately downstream of the Fording River Operation and Greenhills Operation.
Learn more
We are working with government, Indigenous communities and other stakeholders throughout the region. We remain committed to sharing progress and data with rightsholders and stakeholders. We work with the Province of B.C. to make monitoring and compliance data accessible. View the most recent data and information on the British Columbia Elk Valley Water Quality Hub