Beach · Monmouth County · NJ
Is Deal Borough at Sydney Ave safe to swim?
No advisory or algae bloom reported for this water today.
Updated July 19, 2026 · New Jersey beach program (EPA BEACON)
SwimZone for iPhone · launching soon
Know before you get in at Deal Borough at Sydney Ave.
Get an alert the day a bacteria or algae advisory goes up.
What's in the water at Deal Borough at Sydney Ave right now
As of July 19, 2026, Deal Borough at Sydney Ave in Monmouth 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 0.2 in, which can wash bacteria and nutrients into the water.
Blue-green algae at Deal Borough at Sydney Ave
Deal Borough at Sydney Ave is a lake in Monmouth 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 Deal Borough at Sydney Ave
- Is it safe to swim in Deal Borough at Sydney Ave right now?
- Deal Borough at Sydney Ave 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 Deal Borough at Sydney Ave have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at Deal Borough at Sydney Ave. Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in Deal Borough at Sydney Ave?
- No bloom is detected at Deal Borough at Sydney Ave 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 Deal Borough at Sydney Ave'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 Deal Borough at Sydney Ave, and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.