December 18, 2015, 1:57 pm
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Do not swim in or eat food from Christchurch's waterways - that's the message from health officials after finding high amounts of faecal contamination.
Water samples from the Avon and Heathcote rivers and the Heathcote estuary revealed high amounts of campylobacter and E coli, according to the Institute of Environmental Science and Research.
Canterbury medical officer Alistair Humphrey said Christchurch waterway quality was poor and E coli levels usually exceeded recreational water guidelines during normal weather conditions.
"No one should swim in, or consume food from, these waterways," he said.
"Recreational river users, such as rowers, should always avoid the waterways 48 hours after rainfall and always wash their hands and equipment thoroughly after being in contact with the water."
He said while faeces from any animal carried a health risk if ingested, human faeces had the greatest risk.
Ducks and Canadian geese were the biggest contributors to faecal contamination, but following rainfall human and dog faeces could also be present.[what no swans]
"Dog owners need to pick up after their dog - every time," Dr Humphrey said.
"No matter where you are in Christchurch, if you don't pick it up it will end up in a river after rainfall."
The research was carried out between April and September 2015, with samples taken from nine locations.
The highest levels of E coli was observed at the Antigua Boatsheds on the Avon River -
mostly from wildfowl.
Catherine St in Woolston and Kerr's Reach in Wainoni were the only locations to turn up human sewage during normal weather conditions.tamination
[
how many turned up human contamination during abnormal conditions]
Christchurch City Council water manager Tim Joyce said progress was being made reducing the amount of wastewater overflowing into waterways.
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