Figure: 25 TAC §265.306(c)
Disinfectant and Cyanuric Acid Levels Minimum Ideal Maximum
Free Available Chlorine 1.0 ppm 3.0 - 5.0 ppm 8.0 ppm
Bromine 2.5 ppm 5.5 - 7.5 ppm 12.0 ppm
Combined Chlorine: Out-of-Door Facilities Only 0.0 ppm 0.0 ppm 1.5 ppm
Combined Chlorine: Indoor Facilities Only 0.0 ppm 0.0 ppm 0.5 ppm
Cyanuric Acid (Stabilizer) - Out-of-Door Facilities Only 0.0 ppm 20 ppm 50 ppm
Cyanuric Acid (Stabilizer) - Indoor Facilities 0.0 ppm 0.0 ppm 0.0 ppm