California Code of Regulations (Cal. Code Reg.): Title 22 – Social Security  >   Cal. Code Reg. §65527. Water Clarity

The pool operator shall maintain clear pool water while the public pool is in use. The pool operator shall close the public pool if the bottom of the pool at the maximum depth is not clearly visible from the deck. The pool operator shall not reopen the public pool for use until the pool water is clean and clear, and the bottom of the pool at the maximum depth is clearly visible from the deck. If the bottom of the pool is not visible 48 hours following inspection and closure by the enforcing agent, the enforcing agent may order the pool drained.