May 5, 2026
Permit/Opening
21 - cyanuric acid level not exceeding maximum
Regulation: 511-3-5-.17(4) - (4) stabilizer (if used) cyanuric acid,ppm ideal: 30-50 maximum: 90 comments: if stabilizer is: too high: - may reduce chlorine efficacy too low: - chlorine residual rapidly destroyed by sunlight note: stabilizer is not needed in indoor or br
Observed cyanuric acid levels reading higher than 90ppm. CA: Cyanuric acid levels should not exceed 90ppm.