Is it safe to restart a drinking water shaft in this area when scientists are still working to understand groundwater flow under Red Hill?

Yes, while questions remain concerning the exact rate and direction of groundwater flow beneath Red Hill, the extensive groundwater monitoring has demonstrated that the petroleum plume remains near the Red Hill Facility and is not migrating. Drinking water treatment systems are designed to reduce all regulated contaminants to concentrations below drinking water MCLs. The performance of drinking water treatment systems is demonstrated through pilot testing and routine compliance monitoring after system start-up. In addition, the Red Hill tanks have been defueled, so there is no longer a risk of a large-scale release into a drinking water shaft like the 2021 incident.