LAC 51:XXIV.903. Disinfection [formerly paragraph 24:018]

A. Disinfection shall be employed in all swimming pools. The disinfection of the water shall be continuous and when chlorine alone is used, the water shall contain at least 0.4 parts per million residual chlorine; or 0.7 parts per million residual chlorine when chlorine with ammonia is used, as determined by the N,N diethel-p-phenylenediamine (DPD) test. B. On innovative processes, the state health officer may allow new and innovative means of disinfection so long as the disinfection residuals can be measured easily, accurately, and reliably (see §725).