This week on News 12 Long Island - What's in the Water: A News 12/Newsday Investigation.

Tuesday, Dec. 15: Click Here for Full Report 
Hidden dangers to Suffolk’s groundwater: Our investigation reveals dozens of private sewage treatment plants have been polluting Suffolk’s groundwater with discharges that violate state nitrogen limits. Why, and who’s watching?

Wednesday, Dec. 16: Click Here for Full Report
Should a sewage treatment plant be placed anywhere close to a public water well? The News 12/Newsday investigative team looks into a new county health policy that some say does more to help builders than protect public health.

What's in the Water: Only on News 12 Long Island and Newsday.