20. The person in charge of a pool accessible to the general public or a restricted group of persons, or a private pool for the use of immovables or mobile home parks having more than 9 dwelling units must maintain a record containing(1) the results of the water monitoring tests performed pursuant to sections 9 to 12, as applicable;
(2) identification of the pool, the date of the monitoring, the names of the persons who performed the monitoring and the contact information of the person in charge of the pool;
(3) the total number of bathers during the day; and
(4) any information pertaining to the events referred to in sections 17 to 19.