Air quality is improving in the Waikato region, but indications are that Tokoroa is unlikely to meet national environmental standards next year.
That’s the finding of a report, Ambient Air Quality Monitoring Report for the Waikato Region – 2017, just released by Waikato Regional Council. The report provides an update on the state and trends of air quality at various urban locations around the Waikato region up to the end of 2017.
Senior regional council scientist Jonathan Caldwell said the main air pollutant of concern in the Waikato region is fine particulate matter.
“For health reasons we monitor the levels of particles that are small enough to be inhaled (PM10) and in some situations levels of PM2.5 which are even smaller sized particles able to penetrate deep into the lungs and enter the bloodstream,” Mr Caldwell said.
“The good news is that we’ve found improving trends for PM10 levels in Tokoroa, Taupō, Te Kūiti and Putaruru and that’s mainly due to the installation of efficient woodburners or other home heating appliances,” he said.
But despite further air quality monitoring up to mid-2019 also indicating continuous improvement, Tokoroa is unlikely to meet the National Environmental Standard for Air Quality (NESAQ) compliance target of no more than one exceedance per 12 month period by September 2020.
Monitoring of PM2.5 over the last three years in Tokoroa indicates that compliance with the World Health Organisation annual average PM2.5 guideline, if adopted as a national standard through the current review of the NESAQ, is also unlikely to be met.
Emissions from non-compliant fireplaces and the burning of wet wood have been identified as the greatest contributors to poor air quality in Tokoroa.
To address air quality in Tokoroa, the Warm Homes Clean Air project was established in 2007 by Waikato Regional Council and South Waikato District Council.
The partnership project has included both full and partial subsidies for replacement of non-compliant woodburners with clean heat installations such as NES-compliant burners or heat pumps, as well as education and awareness campaigns around burning dry wood and correct operation and maintenance of woodburners.
“Additional or alternative intervention is going to be needed to improve Tokoroa’s air quality,” Mr Caldwell said.
In response, an air quality education and behaviour change plan has been developed by the regional council with the following objectives:
The regional council has begun further engagement with key stakeholders and a shared vision to improve air quality has been established. The regional council will work alongside key stakeholders, including the community, to achieve these objectives.
The report can be found at: www.waikatoregion.govt.nz/tr201815(external link).