In the shadow of the Gateway Arch in St. Louis, MO, the American Society of Plumbing Engineers held its 2001 Technical Symposium from November 1-4, 2001. The Symposium featured 2 1/2 days of instruction from nationally recognized experts and practicing design engineers on a wide variety of useful topics, including backflow prevention, reverse osmosis, seismic restraint, pumping applications, fuel gas system design, hot water system sizing, sewerage and sump pumps, air admittance valves, medical gas piping, fire pumps, electronic plumbing and greywater treatment. In addition, the Symposium presented a Technical Product Exposition that gave manufacturers of water heaters, pumps, plastic piping, boilers, valves and commercial fixtures the opportunity to display their wares for the 350 plumbing engineers and ASPE members in attendance.