There is a new push to find the source of chemicals contaminating groundwater in Nassau County.

The Massapequa Water District says it has new technology that can uncover the source of the plume.

Water district officials believe the contamination comes from the former Navy and Northrop-Grumman plant in Bethpage. They are suing the government to pay for the cleanup. To help with their case, they are seeking permission for new tests they hope will prove the contamination originates at the Grumman plant.

Officials say the new technology would be able to tell if chemicals found in off-site wells are related to the plume in Bethpage.

Monitoring wells have been installed just outside of the Massapequa Water District. It's considered an early warning system.

If there comes a time when the water in Massapequa is affected by the plume, water district officials say they will have to install carbon filters and air strippers to treat the contamination.