A senate inquiry in Newcastle has heard Hunter Water knew about the ground water supply being contaminated by firefighting chemicals from the Williamtown RAAF base in 2013, but didn’t inform residents because there was no known risk.

Chief Operating Officer, Dan Cleary, fronted the inquiry this morning and was questioned about the contamination of the Tomago sandbeds.

He said Hunter Water was first made aware the base was using potentially toxic chemicals in 2009, and that in 2012 it knew ground water on the site had been contaminated.

The inquiry has also heard from Port Stephens MP Kate Washington and the Professional Fishermans’ Association.

We’ll bring you a full wrap of the inquiry in NBN News tonight at 6.