Green algae in swimming pool — New York, New York
Green, slimy water and algae growth on pool walls or floor indicate that the sanitizer level has dropped too low, the filtration system isn't running enough hours, or the pH is out of range. Left untreated, algae can clog the filter, stain the plaster, and make the pool unsafe to swim in. A pool technician can test the water chemistry, perform a shock treatment, brush and vacuum the surfaces, clean or backwash the filter, and adjust the chemical balance to prevent recurrence.
Who to call
For this problem in New York, call a: Zwembadtechnicus
Vind een Zwembadtechnicus in New YorkSymptoms to look for
- Pool water turns green, cloudy, or has a slimy film on the surface
- Green or black patches growing on pool walls, steps, or floor
- Filter pressure gauge reading higher than normal (clogged filter)
- Strong chlorine smell yet low free-chlorine test result (chloramines, not free chlorine)
Spoeddienst in New York
Emergency home services in New York City are available 24/7 but come at premium rates — expect $150–$300+ per hour for after-hours plumbing or electrical emergencies. Response times average 45–90 minutes in Manhattan, longer in outer boroughs. Always verify the provider's NYC license before letting them in.