Beach · Cumberland County · NJ
Is Greenwich Twp at Bayside safe to swim?
No advisory or algae bloom reported for this water today.
Updated July 19, 2026 · New Jersey beach program (EPA BEACON)
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What's in the water at Greenwich Twp at Bayside right now
As of July 19, 2026, Greenwich Twp at Bayside in Cumberland County, New Jersey is clear to swim. 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 0.3 in, which can wash bacteria and nutrients into the water.
Blue-green algae at Greenwich Twp at Bayside
Greenwich Twp at Bayside is a lake in Cumberland County, New Jersey. 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 Greenwich Twp at Bayside
- Is it safe to swim in Greenwich Twp at Bayside right now?
- Greenwich Twp at Bayside is clear to swim 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 Greenwich Twp at Bayside have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at Greenwich Twp at Bayside. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in Greenwich Twp at Bayside?
- No bloom is detected at Greenwich Twp at Bayside 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 Jersey lakes and beaches have swim advisories today?
- Today, 4 New Jersey waters are under a swim advisory and 73 more warrant caution, out of 467 monitored waters SwimZone tracks in the state.
- How is Greenwich Twp at Bayside'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 Greenwich Twp at Bayside, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.