Beach · Suffolk County · NY
Is TERRACES ON THE SOUND safe to swim?
Recent heavy rain may have spiked bacteria since the last clear sample.
Updated July 19, 2026 · New York beach program (EPA BEACON)
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What's in the water at TERRACES ON THE SOUND right now
As of July 19, 2026, TERRACES ON THE SOUND in Suffolk County, New York carries a swim caution. Blue-green algae are not currently monitored at this water. No fecal-bacteria advisory is posted (state beach program). Rainfall over the past week totaled 3.6 in, which can wash bacteria and nutrients into the water.
Blue-green algae at TERRACES ON THE SOUND
TERRACES ON THE SOUND is a lake in Suffolk County, New York. Blue-green algae are not currently monitored at this water.
Blue-green algae (cyanobacteria) blooms are most common from midsummer into early fall, when the water is warm, calm, and rich in nutrients from runoff. They can produce toxins that make people sick and can be rapidly fatal to dogs, so skip water that looks green, scummy, or like spilled paint, and keep children and pets out of it.
Frequently asked: swimming in TERRACES ON THE SOUND
- Is it safe to swim in TERRACES ON THE SOUND right now?
- TERRACES ON THE SOUND carries a swim caution today. Blue-green algae are not currently monitored at this water. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does TERRACES ON THE SOUND have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at TERRACES ON THE SOUND. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in TERRACES ON THE SOUND?
- No bloom is detected at TERRACES ON THE SOUND today, but dogs are much more vulnerable to blue-green algae than people, and blooms can form within hours. Always keep dogs away from water that looks green, scummy, or discolored, and rinse them off after swimming.
- How many New York lakes and beaches have swim advisories today?
- Today, 19 New York waters are under a swim advisory and 148 more warrant caution, out of 520 monitored waters SwimZone tracks in the state.
- How is TERRACES ON THE SOUND's water quality measured?
- SwimZone builds this read from EPA CyAN satellite imagery for blue-green algae, official beach and fecal-bacteria advisories where a program monitors TERRACES ON THE SOUND, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.