I recently completed a two-day course to become a C.P.O., a certified pool operator, a person who’s responsible for keeping swimming pools and spas free of disease, injury, and worse. The class was held upstairs at the Montauk Firehouse.
Most of the dozen or so who attended were renewing their certification. I was a first-timer and knew that chlorine had to be kept at a certain level to keep pathogens at bay. What could be simpler?