Pool water turned green after vacation — Chicago, Illinois
Returning home to a pool full of green, murky water is one of the most common shock-and-treat scenarios. Algae blooms develop quickly when the pump is off or chlorine drops to zero for even a few days—warm temperatures accelerate the problem. The fix starts with brushing the walls and floor, then a triple- or quadruple-dose chlorine shock (bring free chlorine to 30 ppm for green, 40 ppm for dark green or black). Running the pump 24/7 while the chlorine works, backwashing or cleaning the filter frequently, and adding clarifier or flocculant to capture dead algae are all part of the recovery process. A pool technician can perform the shock treatment, test and rebalance pH, alkalinity, and CYA levels, and have the pool swim-ready in 2–4 days.
Who to call
For this problem in Chicago, call a: Zwembadtechnicus
Vind een Zwembadtechnicus in ChicagoSymptoms to look for
- Pool water is bright green, dark green, or blackish-green instead of clear blue
- Water is cloudy or murky and you cannot see the pool floor
- Slimy green film on pool walls, steps, or floor when touched
- Strong musty or swamp-like odor coming from the pool
- Pool filter pressure gauge reads higher than normal due to algae clogging
Spoeddienst in Chicago
Emergency home services in Chicago are widely available 24/7, with typical response times of 30–60 minutes. After-hours rates range from $100–$200/hour. During polar vortex events, heating emergencies can see delays of 4–8 hours due to overwhelming demand. Illinois requires plumbing and electrical licenses for all work.