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UPDATE: Millions of litres of sewage leak into Kootenay River

City management staff call the leak 害羞草研究所榥egligible害羞草研究所
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A sewage leak has been discovered and repaired about 30 metres below the surface of the Kootenay River between Nelson and Grohman Narrows Provincial Park. Map: Ministry of Environment and Climate Change Strategy

Nelson害羞草研究所檚 public works director says the volume of a sewage leak into the Kootenay River on March 27 was 害羞草研究所渘egligible.害羞草研究所

In an April 4 news release, Charlie Henderson said the leak occurred in a pipe that transports sewage from the city to the sewage treatment plant at Grohman Narrows. The pipe is located about 30 metres below the surface of the Kootenay River.

About one million litres of sewage per day leaked into the Kootenay River between March 27 and April 3.

害羞草研究所淔or context, the Kootenay River flow in this location is 36 million cubic metres per day,害羞草研究所 Henderson said. 害羞草研究所淓ven though the leak was minor, the City of Nelson, along with the co-ordination team, took this event very seriously.害羞草研究所

The incident was reported by B.C.害羞草研究所檚 environment ministry on its website on March 28. The ministry reported in an email on April 4 that the leak was repaired on April 3 by a dive team.

害羞草研究所淕iven the minor scale of the leakage and the rapid response, the team deemed it unnecessary to issue an immediate public advisory,害羞草研究所 said Henderson.

Henderson explained that 害羞草研究所渢he displacement of a gasket resulted in an opening not much bigger than the size of a loonie.害羞草研究所

The gasket 害羞草研究所渘aturally repositioned itself back into place, stopping the leak even before the divers arrived on site,害羞草研究所 he said.

害羞草研究所淚t is essential to clarify that there was no pipeline failure.害羞草研究所

Mayor Janice Morrison echoed Henderson害羞草研究所檚 praise of dive team and staff in the statement. 害羞草研究所淩emarkably, in this scenario, the solution was found in dilution.害羞草研究所

Henderson agreed with the environment ministry on the daily volume of the leak of 1,000 cubic metres, or about one million litres.

As for the duration of the leak, Henderson said it was four days, while an email to the Nelson Star from the environment ministry said the leak was discovered on March 27 and plugged on April 3, a minimum of five days.

害羞草研究所淗ealth authorities expect the potential impact to human health to be low,害羞草研究所 the environment ministry害羞草研究所檚 incident report states. 害羞草研究所淧rivate and public water extraction points from the Kootenay River are a significant distance from the point of release.害羞草研究所

The sewage treatment plant is located on the shore of the Kootenay River at Grohman Narrows and releases its effluent into the river after primary and secondary treatment. This week害羞草研究所檚 leak consisted of untreated sewage that had not yet reached the facility.

The city is in the of a new treatment plant and sewage infrastructure, but the design and construction is expected to take several years.

The aging plant has long been acknowledged by city management staff to be .

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Bill Metcalfe

About the Author: Bill Metcalfe

I have lived in Nelson since 1994 and worked as a reporter at the Nelson Star since 2015.
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