. "b1.5 ppbNoNo60 ppbFoaming agents (surfactants)Foaming agents (surfactants) are detergents or detergent-like substances used as cleaning agents in industrial and consumer goods such as personal care products; they are also used as inert ingredients in pesticides.180 ppb180 ppbNo500 ppbNo500 ppbNOTE: Each dot in the above graph represents one month.* Water utilities are noted as exceeding the legal" . . .