Closure of Public Swimming Pools
When any of the conditions in Items A to E are found, a public pool must be immediately closed to use when so ordered by the commissioner. The owner of the pool or the owner’s agent must place a sign at the entrance to the pool indicating that the pool is closed. The pool must remain closed until the condition is corrected and approval to reopen is granted by the commissioner. A pool must be closed when:
- the required units of lifesaving equipment are not provided;
- the water clarity must be clear enough so the bottom drain is easily visible;
- the required disinfectant residuals stated above must be met;
- the pool has been constructed or physically altered without approval of plans; or
- there is any condition that endangers the health or safety of the public.
Swimming pools must be continually disinfected with a chemical which
imparts an easily measured, free available residual effect. When chlorine
is used, a free chlorine residual of at least 0.5 parts per million (ppm),
but no more than 5.0 ppm, must be maintained throughout the pool. When
bromine is used, a residual of at least 1.0 ppm, but no more than 10.0
ppm, must be maintained throughout the pool. The minimum chlorine and
bromine levels are 1.0 ppm and 2.0 ppm respectfully when cyanuric acid
exceeds 30 ppm, pH is greater than 7.7, the water temperature is greater
that 84 degrees Fahrenheit, or the pool is a wading pool. For spa pools,
the minimum allowed disinfectant residual is 2.0 ppm free chlorine or
4.0 ppm.