The use of high-efficiency toilets (HETs) and high-efficiency urinals (HEUs) is becoming common practice in the development of many current commercial projects. While HETs and HEUs are now mandated by codes in many states and municipalities, engineers and specifiers are also choosing these water-saving products to meet green building criteria such as Leadership in Energy and Environmental Design (LEED) and to reduce operating costs that are being impacted by rising water rates.