Water quality in the part of Long Island Sound that includes Huntington remained steady between 2024 and 2026, earning a B grade from Save the Sound in the nonprofit’s latest Long Island Sound Report Card.

Ninety-eight percent of the Sound’s open waters was awarded a grade of B or higher, according to the report, the results of which were released Sept. 22 at a press conference at Gold Star Battalion Beach in Huntington.

The report is issued every two years. The most recent one is based on data collected from May to October of 2025.

The results show “remarkable improvement,” said Peter Linderoth, director of Healthy Water and Bays at Save the Sound.

Algal blooms, fed by excessive amounts of nitrogen from fertilizer runoff and aging septic systems, remain a concern, Linderoth said. Higher water temperatures (caused by climate change) also mean the water can’t hold as much oxygen, which is damaging for fish and other marine life.

Water quality in the Sound’s Eastern Narrows, which includes Huntington, has continued to improve over the past 18 years, according to the report. That includes a marked increase in the amount of oxygen in the water.