California Code of Regulations (Cal. Code Reg.): Title 22 – Social Security > Cal. Code Reg. §65530. Public Pool Water Characteristics
The pool operator shall maintain public pool water characteristics within the following ranges:
pH 7.2 7.8
Cyanuric Acid Concentration 0.0 ppm 100.0 ppm
Pool Water Temperature Not applicable 104° F
ppm = parts per million.