California Code of Regulations (Cal. Code Reg.): Title 22 – Social Security > Cal. Code Reg. §65545. Public Pool Closure
A public pool that is maintained or operated in a manner that creates an unhealthful, unsafe, or unsanitary condition may be closed by the enforcing agent. Unhealthful, unsafe, or unsanitary conditions include, but are not limited to, failure to maintain clean pool water and clear pool water requirements; inadequate disinfection; improper pH; the presence of inhalation hazards; failure to meet microbiological or chemical water-quality standards; missing or broken suction outlet covers; missing or broken pool enclosures, including fencing and gates; hazards to pool users; and any other violation of these regulations identified by the enforcing agent. A public pool shall not be reopened until the unhealthful, unsafe, or unsanitary condition has been rectified and upon specific written approval from the enforcing agent.