Grind

The latest water quality report from the Concerned Citizens of Montauk flags the persistent and harmful presence of the enterococcus bacteria in the Montauk area. While this week's round of testing revealed low bacteria levels in East Hampton and Amagansett, Montauk waters remained problematic.

Sag Harbor eateries including the Corner Bar, Il Cappuccino, Tutto il Giorno, and Sag Pizza will provide the food for a garden party Saturday to benefit the Sag Harbor Whaling and Historical Museum. 

Local musicians will be performing for free on the Montauk Green every Monday from next week through September, courtesy of the Montauk Chamber of Commerce. Music fans are encouraged to take dinner, refreshments, and a blanket or beach chair. Starting off this series Monday at 6 is Joe Delia and Friends.

In what will be the latest start for any full moon walk this year, at 9 Friday night you can take a leisurely hike courtesy of the South Fork Natural History Museum and the Friends of the Long Pond Greenbelt behind the museum.

The East Hampton Trails Preservation Society has organized a moderate hike of slightly more than two miles on Wednesday that will include a private tour of the Folly Tree Arboretum in Springs.

Founded in 2013 by Tucker Marder as a cultural archive of trees, the arboretum is dedicated to ecological storytelling and promoting an environmental ethic through art and science. Mr. Marder will lead the tour on Wednesday.

Part of a new series from the Wainscott Heritage Project, on Saturday at the Wainscott Chapel, Geoff Gehman, a journalist and author, will go "Beyond the Kingdom: Wainscott 1.0 and 2.5." Starting at 10 a.m., he will dive into the past by way of his memories of life here in the 1960s and 1970s, from Norman Jaffe architecture to the Georgica Association to Truman Capote.

Historic cars can be seen on the grounds of the Bridgehampton Museum’s Nathaniel Rogers House from 11 a.m. to 3 p.m. Saturday in a show called “Fast Company.” Aside from the full-size cars, you can check out slot car races on a custom track designed to match the old raceway at the Bridge. 

Juneteenth, the holiday marking the emancipation of enslaved people in the United States, has long been celebrated by African-Americans, but since becoming a federal holiday three years ago, Juneteenth has become an opportunity for broader celebration.

News 12 Long Island will air another debate between the congressional candidates John Avlon and Nancy Goroff on Sunday at 11:30 a.m. on its "Power & Politics" show.

The recycling center on Springs-Fireplace Road in East Hampton will accept hazardous materials on Saturday.

It’s time, once again, to come together to remember the June 13, 1942, Nazi saboteur landing on the beach. On Saturday the Amagansett Life-Saving Station will host “an evening of film, re-enactment, and speculation on what really took place.”

East Hampton Town is offering an ocean lifeguard certification course on Monday and Wednesday evenings at Indian Wells Beach.