Beach · Nassau County · NY
Is LIDO BEACH PARK DISTRICT 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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Know before you get in at LIDO BEACH PARK DISTRICT.
Get an alert the day a bacteria or algae advisory goes up.
What's in the water at LIDO BEACH PARK DISTRICT right now
As of July 19, 2026, LIDO BEACH PARK DISTRICT in Nassau 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 3.0 in, which can wash bacteria and nutrients into the water.
Blue-green algae at LIDO BEACH PARK DISTRICT
LIDO BEACH PARK DISTRICT is a lake in Nassau 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 LIDO BEACH PARK DISTRICT
- Is it safe to swim in LIDO BEACH PARK DISTRICT right now?
- LIDO BEACH PARK DISTRICT 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 LIDO BEACH PARK DISTRICT have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at LIDO BEACH PARK DISTRICT. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in LIDO BEACH PARK DISTRICT?
- No bloom is detected at LIDO BEACH PARK DISTRICT 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 LIDO BEACH PARK DISTRICT'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 LIDO BEACH PARK DISTRICT, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.