Environment Canterbury agrees with a new study that found achieving national bottom lines for contaminants across New
Zealand will be a huge challenge.
The report released by Our Land and Water, 'Current state of water contaminants compared to bottom lines', found that substantial reductions of sediment, phosphorous, nitrogen and E. coli are needed to meet the national bottom lines set out in the National Policy Statement for Freshwater Management 2020 (NPSFM).
The study shows that reductions in sediment loss are needed across the Canterbury hill and high country, while
intensively farmed areas on the Canterbury plains require large reductions in nitrogen losses. Additionally, The Selwyn
Te Waihora region needs to reduce phosphorous load to meet the NPSFM limit, and E. coli levels are unacceptably high across the region.Work to reduce sedimentation and nutrient loss is ongoing
Science Director Dr Tim Davie said that while there are no surprises in this report, it reinforces the need for us to
continue efforts to reduce our impact on freshwater.
"While this is the first research specifically into the national bottom lines, the need to reduce the volume of
contaminants entering freshwater is not news to us in Canterbury," Davie said. "That said, it’s always good to have more
science to inform us."
"Our Canterbury Land and Water Regional Plan requires landowners to make significant reductions in the loss of nitrate, phosphorous and sediment, and we’re starting
to see some progress," he said.
Davie added that independent of national bottom lines, Cantabrians are telling their regional council they want
swimmable rivers, safe drinking water and healthy freshwater ecosystems.
"What we know, and are hearing from our community, is that in some parts of our region we need to do more to achieve
expectations,” he said.
"We’re currently in the process of seeking community input on our freshwater priorities as we work towards notifying a new Regional Policy Statement in 2024. We will then be engaging with the community on
how we should meet freshwater goals, which will form the basis of a new regional plan."