The New Hampshire Department of Health and Human Services is resuming testing for people who may have been exposed to water from a contaminated city-owned well in Portsmouth.
Officials closed the Haven well at the Pease International Tradeport in May 2014 after testing found chemicals at levels 10 times higher than the Environmental Protection Agency's Provisional Health Advisory.
Officials suspect the chemicals got in the well because of firefighting foam used on the former Pease Air Force base runway.
The resumed testing, the second and final round, will run from now until Oct. 16.
From April through June, more than 450 people got their blood tested.
People who want their blood tested should call DHHS at 271-9461. Test results will be provided as soon as they become available.