3701-31-04 (B)(1)(c) / Minimum disinfection residual shall be maintained as required.
Critical The minimum disinfection residual of 1 ppm was not maintained as required. At pool-side, the disinfection residual was measured at 0.5 ppm.
Maintain a disinfection residual of 1 ppm or greater as required. Do not open the pool to swimmers until the minimum disinfection residual is restored. Correct By: 02-Aug-2016