Among several changes to its commercial-pool code, Delaware will require a form of secondary sanitation in certain pools as of Jan. 2, 2016. The updated pool and spa code will require such systems on wading pools, treatment pools, spray pads and vessels designated to serve the differently abled. The requirements apply to new construction and renovations.

The language pertaining to secondary sanitation was taken from the Model Aquatic Health Code, said Dana LeCompte, director of community environmental health services. Other changes were adopted from the MAHC. Minimum sanitizer levels have been raised to 1.0 parts per million for pools – 2.0 ppm if cyanuric acid is being used. In small pools, the chlorine level must read at least 3.0 ppm. In spas, the minimum chlorine or bromine level is 4 ppm.

After January, aquatic facilities will need a qualified operator to make weekly visits and document them. Pools also will need a diaper-changing station in the restrooms.

“What we most want to do is protect public health, and we try to do that through working with our stakeholders and the public,” LeCompte said. “The main thing is to try to make sure people are safe when they use a public pool.”