The Swedish Armed Forces announced their intention to cover a former training site in Tullinge, located southwest of Stockholm, due to groundwater contamination with PFAS chemicals. The site, which is a 2.5-hectare area in Riksten, was utilized by the former air force wing F18 for fire drills until 1986. It was later discovered that the firefighting foam used during these exercises contained harmful PFAS substances, leading to the closure of the Tullinge water treatment plant in 2011 due to significant contamination concerns.

The Armed Forces have communicated their strategy to lay a protective cover over the contaminated area to safeguard the local groundwater resources. This cover is projected to last between 50 to 100 years, indicating a long-term commitment to environmental remediation. Jonathan Bannister, the project leader for the Armed Forces, stated, "We are working intensively to investigate and implement appropriate measures at locations where we have conducted activities that have caused contamination."

The decision to cap the site reflects a growing awareness and response to environmental issues, particularly the dangers posed by PFAS, which are known for their persistence in the environment and potential health hazards. This initiative could potentially restore public confidence and health safety amongst local populations who rely on the groundwater, while highlighting the need for continued vigilance and remediation efforts at other potentially contaminated sites across the country.