LACEY TOWNSHIP, N.J. — Radioactive water that leaked from the nation’s oldest nuclear power plant has reached an aquifer that supplies drinking water to much of southern New Jersey, the state’s environmental chief said yesterday.
The state Department of Environmental Protection has ordered the Oyster Creek Nuclear Generating Station to halt the spread of contaminated water underground, even as it said there was no imminent threat to drinking water supplies.
The department launched a new investigation yesterday into the April 2009 spill and said the actions of plant owner
Tritium is found naturally in tiny amounts and is a product of nuclear fission. It has been linked to cancer if ingested, inhaled, or absorbed through the skin in large amounts.
“There is a problem here,’’ said environmental Commissioner Bob Martin. “I am worried about the continuing spread of the tritium into the groundwater and its gradual moving toward wells in the area.’’
The tritium leaked from underground pipes at the plant on April 9 of last year and has been slowly spreading underground at 1 to 3 feet a day. At the current rate, it would be 14 or 15 years before the tainted water reaches the nearest private or commercial drinking water wells about 2 miles away.
But the mere fact that the radioactive water — at concentrations 50 times higher than those allowed by law — has reached southern New Jersey’s main source of drinking water calls for urgent action, Martin said.
He ordered the Chicago-based company to install new monitoring wells to better measure the extent of the contamination, and to develop a plan to keep it from ever reaching a well.