
pages 349-356
Available online: 21 Nov 2011Advances in analytical chemistry have led to numerous low-level observations of consumer product ingredients in environmental media. A “market forensics” approach complementary to a typical sampling and analysis campaign is described using readily available product formulation and market sales data to estimate the “down-the-drain” load to a wastewater treatment facility. A case study for common cleaning product ingredients is provided for a site in the USA. A regional per capita daily use rate was derived (0.33 g/ person/day) and applied to the residents resulting in an estimated daily influent load (2 kg). A single product type, liquid laundry detergent, was found to contribute 69% of the load alone.