Pima County inspector Dave Hansen uses a color-coded testing kit to measure pH and chlorine level during a recent pool inspection. Summertime, and its heat, adds a tough variable to keeping pool chemicals in balance and water quality safe.
Behind the scenes, pool inspector Dave Hansen checks the automated pump-room operations of a public pool. The county inspects public pools monthly during swim season, and workers check water quality hourly. Hansen was checking the system on May 24.