re 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.19.6 ppb19.6 ppbNo500 ppbNo500 ppbNOTE: Each dot in the above graph represents one month.* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL).