Gov. Michael N. Castle is appealing to Pennsylvania Gov. Robert P. Casey to have environmental officials in both states work together to come up with a plan to prevent increased pollutant discharge into the Brandywine River.
Ninety percent of the water flow ing down the Brandywine in the summer is chemically treated -- much of it at sewer plants upstream -- before it reaches the Delaware line at Smith Bridge.
"The water we're going to be paddling our canoes on this morning is the same water we're going to be drinking this afternoon in Wilmington," Mr. Castle said last week.
The Brandywine provides drinking water for 125,000 New Castle County residents.
Delaware officials see the Brandywine as a critical supplier of drinking water.