
Water chemical maintenance
Real Decreto 742/2013, which sets the health criteria for collective-use pools — and a community pool is one — requires pool water to hold a pH between 7.2 and 8.0 and residual free chlorine between 0.5 and 2 mg/l. Within that range we work to a narrower target, a pH between 7.2 and 7.6, because that is where chlorine disinfects best and irritates eyes least. It is measured daily and the dose is adjusted to how much the pool is actually used, not to a fixed factory schedule.




