3701-31-04 (B)(1)(c) / Minimum disinfection residual shall be maintained as required.
Critical Chlorine disinfectant residual was less than 2 ppm for the spa. Pool company contacted and employee dispatched to raise chlorine level.
Do not operate the pool when the disinfectant residuals are less than what is required. Ensure the chlorine disinfectant residual is at 2 ppm or above prior to placing the spa back into operation.