California Code of Regulations (Cal. Code Reg.): Title 22 – Social Security > Cal. Code Reg. §65523. Operation Records
(a) Except as provided in Health and Safety Code, section 116048, the pool operator of every public pool open for use at a public pool site shall test the disinfectant residual and pH of the public pool water a minimum of once per day. The pool operator shall also test heated pools’ water temperature a minimum of once per day. The pool operator may perform these daily tests using a properly calibrated automatic chemical monitoring and control system if approved by the enforcing agent and in accordance with the manufacturer’s equipment specifications for calibration and directions for proper use. The pool operator shall maintain a written daily record of all test results, equipment readings, calibrations, and corrective action taken at the public pool site.
(b) If the pool operator adds cyanuric acid to a public pool, the pool operator shall measure the cyanuric acid concentration in that pool a minimum of once per month and shall maintain a written record of these test results and all corrective action taken at the public pool site.
(c) The pool operator shall maintain a written record of routine maintenance and repairs to the public pool at the public pool site.
(d) If a fecal, vomit, blood contamination, near-drowning, or drowning incident occurs in a pool, the pool operator shall record the incident in accordance with the requirements of section 65546 and shall identify the affected public pool in the incident record if there is more than one pool at the public pool site. This record shall be maintained at the public pool site.
(e) The pool operator shall maintain data and records collected pursuant to subdivisions (a), (b), (c), and (d) for at least two years for inspection by the enforcing agent and shall submit all data and records to the enforcing agent upon the agent’s request.