water from Lake E.V. Spence for distribution to their member and customer cities (production of 6,700 m3 per day). Further examples: Big Spring, Texas indirect potable reuse program Orange County, California Pasadena, California Payson, Arizona The Torreele project in the Veurne coastal region of Belgium, which began operating in 2002" Virginia Occoquan Reservoir – The Upper Occoquan Sewage Authority plant discharges its highly treated output to supply roughly 20% of the inflow into the Occoquan Reservoir, which provides drinking water used by the Fairfax County Water Authority – one of the three major water providers in the Washington, D.C. metropolitan area. Windhoek, Namibia Wichita Falls, Texas (toilet-to-tap reuse as a temporary measure during drought conditions, 2014–2015; Indirect potable use 2015) Direct potable reuse (DPR) In July 2014, the city of Wichita Falls, Texas (USA), became one of the first in the United States to use treated wastewater directly in its drinking water supply (production of 45,000–60,000 m3 per day). Treated wastewater is disinfected and pumped to the Cypress Water Treatment Plant where it goes through clarification, microfiltration (MF), reverse osmosis (RO), and ultraviolet light disinfection before being released into a holding lagoon where it is blended with lake water (50:50). The blended water goes through a seven-step conventional surface water treatment. Proposed projects: Los Angeles, California – By 2019, the Los Angeles Department of Water and Power will build a plant to replenish their groundwater aquifer with purified water in order to deal with the shortage of rain and snow fall, restricted water imports and local groundwater contamination. San Diego, California (San Diego County) Pollution control Numerous efforts have been undertaken in the United States to control the pollution of water resources and to make drinking water safe. The most comprehensive federal regulations and standards for the water treatment industry were implemented in the 1970s, in reaction to a huge increase in environmental concerns in the country. In 1972, Congress passed the Clean Water Act (CWA), with the unprecedented goal of eliminating all water pollution by 1985 and authorized expenditures of $24.6 billion in research and construction grants. In 1974, Congress passed the Safe Drinking Water Act, specifying a number of contaminants that had to be closely monitored and reported to residents should they exceed the maximum contaminant levels. The CWA included substantial federal grant funding to improve sewage treatment infrastructure in the form of construction grants to local governments.