Pond · Franklin County · ME
Is Wilson Pond safe to swim?
No advisory or algae bloom reported for this water today.
Updated July 22, 2026 · EPA CyAN satellite
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Wilson Pond is clear today. Be the first to know when it's not.
SwimZone checks this water every day and pings you the moment a bacteria or algae advisory goes up.
What's in the water at Wilson Pond right now
As of July 22, 2026, Wilson Pond in Franklin County, Maine is clear to swim. Satellite imagery detected no blue-green algae bloom as of July 21, 2026. Rainfall over the past week totaled 0.4 in, which can wash bacteria and nutrients into the water.
Blue-green algae at Wilson Pond
Wilson Pond is a pond in Franklin County, Maine covering about 0.9 sq mi, the 228th-largest of the 319 lakes SwimZone monitors in Maine. Satellite imagery detected no blue-green algae bloom as of July 21, 2026.
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.
Bloom history at Wilson Pond
From EPA CyAN's satellite archive
Over 7 summers of satellite monitoring since 2020, Wilson Pond has not reached a blue-green algae advisory level. Conditions can still change quickly, so check the current read before you swim.
Frequently asked: swimming in Wilson Pond
- Is it safe to swim in Wilson Pond right now?
- Wilson Pond is clear to swim today. Satellite imagery detected no blue-green algae bloom as of July 21, 2026. Conditions can change quickly with wind, heat, and rain, so check the posted signs and look at the water before you get in.
- Does Wilson Pond have blue-green algae (cyanobacteria)?
- No blue-green algae bloom is detectable at Wilson Pond as of July 21, 2026 (below the satellite's roughly 10,000 cells/mL detection limit). Cyanobacteria can still appear within hours in warm, calm, nutrient-rich water, so look before you swim.
- Can dogs swim in Wilson Pond?
- No bloom is detected at Wilson Pond 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 often does Wilson Pond have blue-green algae blooms?
- Over 7 summers of satellite monitoring since 2020, Wilson Pond has not reached a blue-green algae advisory level. Conditions can still change quickly, so check the current read before you swim.
- How many Maine lakes and beaches are unsafe for swimming today?
- Today, 15 Maine waters are above a safe-contact threshold and 33 more warrant caution, out of 457 monitored waters SwimZone tracks in the state.
- How is Wilson Pond'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 Wilson Pond, and a recent-rainfall overlay, all refreshed daily. It was last updated July 22, 2026.