Crescent Beach was once a cherished destination for families looking to cool off along the Long Island Sound. But for the past 18 years, it has been deserted due to high levels of bacterial contamination.
Now, local leaders say that years of remediation are paying off — and the beach could reopen as early as next year.
Newly released test results from the Nassau County Department of Health show that fecal coliform and enterococci bacteria — the reasons Crescent Beach was closed — have dropped to levels far below state safety limits. The findings are the most promising since the beach was shut down in the mid-2000s, and officials say they mark a major step toward restoring one of Glen Cove’s most important recreational spaces.
“Reopening Crescent Beach has been a monumental undertaking,” Nassau County Legislator Delia DeRiggi-Whitton, the Legislature’s minority leader, said. DeRiggi-Whitton has led the push to address the beach’s contamination. “These latest test results are incredibly encouraging,” she added, “and I am thankful to Mayor (Pamela) Panzenbeck, the City Council, Glen Cove’s Department of Public Works and everyone who has kept the focus on reopening this hometown treasure for a new generation of Glen Cove families.”
The beach was first closed after routine countywide testing in the mid-2000s revealed dangerously high bacteria levels. Initially, faulty home septic systems were thought to be the cause, triggering an extensive investigation by Nassau County and state environmental agencies.
In 2018, testing by the U.S. Environmental Protection Agency revealed that animal, not human, waste was the primary source of contamination. Swans and other waterfowl living in ponds upstream from Crescent Beach were identified as a major contributor.
With the source clearer, city and county leaders worked with engineers from H2M Architects + Engineers, in Melville, to develop a remediation plan approved by the State Department of Environmental Conservation. The strategy has included installing helix filter systems on private land to filter runoff from swan ponds, replenishing sand, and building a new culvert under Cobble Court to allow for tidal flushing of the stream that flows to the beach. New plantings along the stream corridor help filter contaminants before they reach the Sound.
“The bacteria levels have been trending very positive, and we’re more than hopeful to reopen in summer of 2026,” Panzenbeck said. “There have been days when we could have opened, but we couldn’t promise a continued period when the beach would remain safe. We want to be absolutely sure before we reopen permanently.”
The remediation has required significant investment. DeRiggi-Whitton secured nearly $1 million in county bonds to fund the upgrades, and private estate owners covered the cost of installing helix filters on their properties. The culvert project alone cost about $250,000.
Even with large-scale environmental fixes in place, maintaining the beach will require ongoing effort. DeRiggi-Whitton is pursuing a $108,740 intermunicipal agreement for a Caterpillar compact track loader, which the city would use to grade the sand on the beach and prevent divots where water stagnates.
“The county has paid for all of these improvements other than the helix filters, which homeowners covered,” DeRiggi-Whitton said. “It’s been a major ask of mine for years. Crescent is one of Glen Cove’s only three public beaches, and it deserves to be open and safe.”
In addition to addressing contamination, the city has invested in infrastructure improvements on the beach. Spiro Tsirkas, Glen Cove’s director of youth services and recreation, said that new stairs and an Americans with Disabilities Act-compliant ramp have been installed to replace aging stone steps, restrooms have been upgraded, and a snow fence has been added to protect the dunes.
For longtime residents, Crescent Beach is a special place. Panzenbeck recalled visiting it as a child, and bringing her own children there before it closed.
“Like so many Glen Cove families, I have wonderful memories at Crescent Beach,” she wrote in a statement. “I appreciate Legislator DeRiggi-Whitton’s commitment to this effort, and I’m proud the city has played a role in moving us toward reopening a beach that means so much to our community.”
The water was tested three times a week this summer, with consistent improvements noted after the culvert was completed. According to DeRiggi-Whitton, by late summer, bacteria levels had dropped so low that the beach could have reopened if the season hadn’t ended.
The priority now, she said, is to ensure that improvements are consistent through consecutive summer seasons so the city can reopen the beach with confidence. In the meantime, city and county officials are optimistic that the decades-long effort is finally nearing its conclusion. Panzenbeck said the city would continue working closely with the Health Department to evaluate test results.
“These are the best continuous results we’ve gotten in a long time,” the mayor said. “The county was very happy with the progress, and their guidance looks very promising.”
