Beach · Erie County · PA
Is BEACH 9 (PINE TREE BEACH) safe to swim?
Recent heavy rain may have spiked bacteria since the last clear sample.
Updated July 19, 2026 · Pennsylvania beach program (EPA BEACON)
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Know before you get in at BEACH 9 (PINE TREE BEACH).
Get an alert the day a bacteria or algae advisory goes up.
What's in the water at BEACH 9 (PINE TREE BEACH) right now
As of July 19, 2026, BEACH 9 (PINE TREE BEACH) in Erie County, Pennsylvania 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 3.3 in, which can wash bacteria and nutrients into the water.
Blue-green algae at BEACH 9 (PINE TREE BEACH)
BEACH 9 (PINE TREE BEACH) is a lake in Erie County, Pennsylvania. 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 BEACH 9 (PINE TREE BEACH)
- Is it safe to swim in BEACH 9 (PINE TREE BEACH) right now?
- BEACH 9 (PINE TREE BEACH) 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 BEACH 9 (PINE TREE BEACH) have blue-green algae (cyanobacteria)?
- Blue-green algae are not currently monitored at BEACH 9 (PINE TREE BEACH). Watch for green, blue-green, or paint-like scum and avoid the water if you see it.
- Can dogs swim in BEACH 9 (PINE TREE BEACH)?
- No bloom is detected at BEACH 9 (PINE TREE BEACH) 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 Pennsylvania lakes and beaches have swim advisories today?
- Today, 10 Pennsylvania waters are under a swim advisory and 9 more warrant caution, out of 41 monitored waters SwimZone tracks in the state.
- How is BEACH 9 (PINE TREE BEACH)'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 BEACH 9 (PINE TREE BEACH), and a recent-rainfall overlay, all refreshed daily. It was last updated July 19, 2026.