January 1, 2002: Deadline for compliance with the Stage 1 Disinfectant/Disinfection By-Products Regulation for surface water systems serving >10,000 population. “The Stage 1 DBP Rule updates and supersedes the 1979 TTHM standard by lowering the MCL for TTHMs [to 80 ppb] and establishing maximum residual disinfection level (MRDL) limits for chlorine, chloramines, and chlorine dioxide and new MCLs for chlorite, bromate, and haloacetic acids (HAA5) for all community water systems and nontransient noncommunity water systems that add a chemical disinfectant for either primary or residual treatment. In addition, the Stage 1 DBP Rule requires conventional filtration systems to remove specified percentages of organic materials measured as total organic carbon (TOC) that may react with disinfectants to form DBPs.
Reference: USEPA. (2001). “The Stage 1 Disinfectants and Disinfection Byproducts Rule: What Does it Mean to You?” EPA 816-R-01-014. June 2001.
January 1, 1980: International Decade of Water and Sanitation Begins. “The UN conference on Human Settlements (HABITAT) held in June 1976 at Vancouver, Canada, concluded that nearly two-thirds of the population of the developing world lacked access to safe drinking water and that a larger proportion lacked the means for hygienic human waste disposal. The conference urged governments to give priority to these two areas in their development process. In March 1977, the UN Water Conference, held at Mar del Plata, Argentina, called for establishing the 1980’s as the Decade for Drinking Water and Sanitation. The goal would be to bring clean water and sanitation to all peoples in the world by 1990. Since March 1979, four separate UN bodies have passed resolutions supporting the Decade and calling on all governments to support the Decade’s goals. The U.S. Government, other OECD member states, and the private sector must combine to make this Decade a success.”