1988 – PFAS laden fire fighting foams used in training at Tindal RAAF Base.
2004 – Tindal phases out use of the foam because of concerns about its safety to the environment and to health.
November, 2016 – Defence report finds foams have leached off the base and into the water aquifer.
November, 2016 – Preliminary NT Government report reveals PFAS contamination in town drinking water.
November, 2016 – Public meetings in Katherine organised by Defence to update residents.
December, 2016 – More than 40 properties around Tindal being supplied with drinking water by Defence.
February, 2017 – Defence launched year-long study into extent of contamination in Katherine region from Tindal air base.
April, 2017 – NT Government increases testing of Katherine drinking water. Testing consistently shows two production bores used to supply water treatment plant are well above health limits.
April, 2017 – The Federal Government dramatically reduces the health limits for PFAS chemicals in line with US standards from 0.5 micrograms per litre, to 0.07.
April, 2017 – Public meetings in Katherine for Defence to update residents.
May, 2017 – Katherine told no blood testing would be offered until the chemical contamination study is complete.
June, 2017 – Public meetings in Katherine for Defence to update residents.
July 2017 – Four tests show PFAS levels have “spiked” above health limits for safe drinking water.
August, 2017 – Defence commission delivery of a pilot water treatment plant from the US costing $4 million to remove PFAS from one megalitre of Katherine’s bore water.
August, 2017 – Water restrictions begin in Katherine to reduce water use from PFAS fears.
September, 2017 – New defence water treatment plant jets into Darwin airport.
October, 2017 – Katherine’s public swimming pool returns a PFAS result above health limits.
October, 2017 – Defence holds one-on-one sessions to update residents.
October, 2017 – Defence, media and public officials tour new treatment plant.
November 2017 – NT Government promises to review Katherine water restrictions.
April, 2018 – Power and Water says Katherine will need a new water treatment plant to clean PFAS from drinking water.
May, 2018 – Dr P.J. Spafford alerts residents of alarming PFAS readings from blood tests.
May, 2018 – Mayor Fay Miller offered apology by Health Minister Greg Hunt over rudeness during December PFAS lobbying in Canberra.
June, 2018 – Shine Lawyers wins backing of litigation firm to mount class action against Defence on behalf of Katherine residents.
June, 2018 – Defence, health, university and other experts return to Katherine for another community update.
August, 2018 – Class action filed on behalf of Katherine residents against Department of Defence.
September, 2018 – Into the red zone, the town’s water use moves into the safe buffer of PFAS free supplies.
September, 2018 – First official food warnings, beware eating locally caught fish.
September, 2018 – Supplementary investigation report released.