PROVIDENCE, R.I. (AP) — The state Department of Health and Brown University are partnering to gather data on Rhode Island's drinking water.

The Health Department announced Friday that beginning in August, its Center for Drinking Water Quality will work with Brown to sample about 35 selected water systems and collect data on perfluorinated chemicals.

Perfluorooctane sulfonate and perfluorooctanoic acid have been linked to cancer and other illnesses. The federal Environmental Protection Agency has issued stricter guidelines for human exposure.

Under the direction of the EPA, all public water systems in Rhode Island serving over 10,000 people were tested for perfluorinated chemicals between 2013 and 2015.

The Health Department says the new tests will help officials further assess the situation in Rhode Island.

It's paying for the sampling with the help of federal resources.