Test results of water samples showed that the water does not pose a public health risk.
People who use the Long Island Sound in this area for recreational purposes are free to resume direct contact with the water and swimming at the following beaches is now permitted: Beach Point Club, Orienta Beach Club, Mamaroneck Beach and Yacht Club, Shore Acres Pointe and Harbor Island Park Beach, all in Mamaroneck; and American Yacht Club, Shenorock Shore Club, Coveleigh Club and Greenhaven Association, all in Mamaroneck.
The advisory had been issued as a precaution because an underground force main break near Blind Brook had released sludge close to where the Blind Brook empties into the Long Island Sound. The Westchester County Department of Environmental Facilities took the force main out of service at about 2:15 p.m. on Monday, but repair efforts were hindered by high tide.
Repairs to the force main were completed Tuesday evening and water was pumped through the pipe during the night while workers checked the air relief valves along the force main.
"It is unfortunate timing, we never want these things to happen," said Thomas Lauro, Commssioner of the Department of Environmental Facilities. "But pipes do fail from time to time. This has been in the ground since 1980 approximately."
Crews finished backfilling Wednesday morning and the line resumed normal pumping operations.