Update 26 July 2018
Defence testing near Whenuapai Air Base
The New Zealand Defence Force (NZDF) is contacting some landowners living near Whenuapai Air Base seeking permission to test ground and surface water on their properties for the presence of PFAS. This follows the detection of PFAS at Whenuapai Air Base.
Drinking water at the base, the adjacent school, the village centre on Brigham Creek Road and the recently developed Special Housing Area comes from the town supply and is not affected.
NZDF has been working to determine how and where the ground water flows to from Whenuapai Air Base, and to support the local community. Auckland Council has been consulted and has been assisting NZDF with its preliminary investigation with regional and locally specific information and knowledge.
Preliminary advice from NZDF’s consultants is that while some people may be using ground water at properties close to Whenuapai Air Base, the water is sourced from a bore at a depth of between 200-300 metres and below a thick layer of fine sediment that is expected to exclude PFAS. Testing will clarify that.
Tests will also be carried out on marine life in the harbour nearby to better understand the presence of PFAS in the area.
Health advice remains that there is no acute health risk from exposure to PFAS compounds. There is currently no consistent evidence that environmental exposures to PFOS and PFOA causes adverse human health effects.
Update 18 July 2018
Testing around old crash site near Bulls
The New Zealand Defence Force (NZDF) is testing an area where a Skyhawk crashed in 1996 to help inform the investigation of PFAS in the Bulls water supply.
Earlier this year, at the request of the local councils, NZDF tested the town water supplies of Sanson and Bulls for PFAS compounds. While Sanson came back clear, low levels of PFAS were detected in the Bulls water supply. The levels detected were well below the Ministry of Health’s interim guidance levels for drinking water.
NZDF agreed to help Rangitikei District Council and Horizons Regional Council understand where the PFAS might have come from. Part of that investigation involves testing in the vicinity of the site of the Skyhawk crash to the north of Bulls, to determine whether firefighting foam used at the site could plausibly be a source of the PFAS in the Bulls water supply.
Testing will be carried out by specialists contracted by NZDF on groundwater from existing wells adjacent to the site. NZDF has already tested some supply wells between the crash site and Bulls and has found no PFAS above the laboratory limit of reporting.
The results from these tests will take about eight weeks and will be provided to landowners, statutory regional authorities and the All of Government group involved in the PFAS response.
Ohakea water scheme design study
Funding has been provided to the Manawatū District Council to conduct a study into creating a water scheme for the community at Ohakea.
The Ministry for the Environment has approved funding of $50,000 for a detailed design study that will look at the options for an improved water scheme and the potential costs involved.
The government has not made any decisions regarding the contribution it may make to funding the proposed scheme.
Update 4 July 2018
Latest PFAS testing results reported to Ohakea landowners
Results of third stage testing for the PFAS compounds PFOA, PFOS and PFHxS have been reported back to landowners near RNZAF Base Ohakea. The testing is to investigate the extent of PFAS compounds in the environment around the base.
These results provide the most recent update to the broad New Zealand Defence Force testing programme that included sampling and testing in December 2017 and February-March 2018. This third round of testing was conducted in May, and included groundwater and surface water sampling.
The number of samples that detected PFAS compounds has not significantly changed from the previous rounds of testing. Of the 70 groundwater samples tested, 18 samples exceeded the interim guidance levels for drinking water for the sum total of PFOA and PFHxS, up from 15 samples in the previous testing round.
Alternative drinking water supplies have been offered to people at all affected properties.
The Ministry for the Environment (MfE) is leading the All of Government PFAS Programme. Claire Richardson, MfE’s Chief Operating Officer, said the advice of health officials remains that there is no acute health risk, but a precautionary approach is being taken because the long term effects are uncertain.
“The Ministry of Health says the findings from the third stage testing confirm their advice following the first and second rounds of sampling that there is not a significant public health risk.
“Currently there is no consistent evidence that environmental exposures at the low levels New Zealanders are generally exposed to will cause harmful health effects.”
Claire Richardson said all affected households in Ohakea had been offered alternative water supplies as a precautionary measure when testing was done.
“We are working directly with everyone affected around Ohakea, to provide them with advice and support tailored to their individual needs.”
The Ministry for Primary Industries (MPI) has reviewed the latest results and their advice also remains the same.
“MPI says there is no risk to the general food supply from produce grown on the tested properties.
“MPI will continue to monitor any published research on PFAS to ensure our advice is correct, and update residents as appropriate.”
Claire Richardson said PFAS was one of a number of emerging contaminants that is being grappled with around the world, and New Zealand is working proactively to identify potentially contaminated sites.
“Our priority is working with affected communities,” she said.
“A fourth round of testing of properties near Ohakea will take place later in the year.”
View the Summary results for Ohakea [PDF, 685 KB]
Latest PFAS testing results reported to Woodbourne landowners
Results of third stage testing for the PFAS compounds PFOA, PFOS and PFHxS have been reported back to landowners near RNZAF Base Woodbourne. This testing is to investigate the extent of PFAS compounds in the environment around the base.
These results provide the most recent update to the broad New Zealand Defence Force testing programme that included sampling and testing in December 2017 and February-March 2018. This third round of testing was conducted in May, and included groundwater and surface water sampling.
The number of samples that detected PFAS compounds has not significantly changed from the previous rounds of testing. None of the groundwater samples exceeded the interim guidance levels for drinking water. More surface water samples were taken in this round, with a similar percentage of samples having detectable levels of PFAS. Some groundwater wells could not be re-tested as they are not operational during the winter months.
The Ministry for the Environment (MfE) is leading the All of Government PFAS Programme. Claire Richardson, MfE’s Chief Operating Officer, said the advice of health officials remains that there is no acute health risk, but a precautionary approach is being taken because the long term effects are uncertain.
“The Ministry of Health says the findings from the third stage testing confirm their advice following the first and second round of sampling that there is not a significant public health risk.
“Currently there is no consistent evidence that environmental exposures at the low levels New Zealanders are generally exposed to will cause harmful health effects.”
Claire Richardson said all affected households in Woodbourne have been offered alternative water supplies as a precautionary measure while testing is being done.
“We are working directly with everyone affected around Woodbourne, to provide them with advice and support tailored to their individual needs.”
The Ministry for Primary Industries (MPI) has reviewed the latest results and their advice also remains the same.
“MPI says there is no risk to the general food supply from produce grown on the tested properties.
“MPI will continue to monitor any published research on PFAS to ensure their advice is correct, and update residents as appropriate.”
Claire Richardson said PFAS was one of a number of emerging contaminants that is being grappled with around the world, and New Zealand is working proactively to identify potentially contaminated sites.
“Our priority is working with the affected communities,” she said.
“A fourth round of testing of properties near Woodbourne will be undertaken later this year.”
View the Summary results for Woodbourne [PDF, 544 KB]