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Guidaner and In(ortnation for Slates on L..rovisions or the Sa(e Drinking Wattr Aci hup://www.epa.govlOGWDW/dwh/o-soc/24-d.hlrutd` <br />• • <br />Pennamine D <br />Plantgard <br />Tributon <br />Weed-B-Gon <br />Weeda[ul <br />Agroxone <br />Weedar <br />Salvo <br />Green Cross Weed-No-More 80 <br />Red Devil Dry Weed Killer <br />Scott's 4XD <br />Weed-Rhap LV40 <br />Weedone 100 <br />2,4-Dichloro-phenoxyacetic acid <br />Why is 2,4-D being Regulated? <br />In 1974, Congress passed the Safe Drinking Water Act. This law requires EPA to <br />determine safe levels of chemicals in drinking water which do or may cause health <br />problems. These non-enforceable levels, based solely on possible health risks and <br />exposure, are called Maximum Contaminant Level Goals. <br />The MCLG for 2,4-D has been set at 70 parts per billion (ppb) because. EPA believes this <br />level of protection would not cause any of the potential health problems described below. <br />Based on this MCLG, EPA has set an enforceable s[andazd called a Maximum <br />Contaminant Level (MCL). MCLs are set as close to the MCLGs as possible, considering <br />the ability of public water systems to detect and remove contaminants using suitable <br />treatment technologies. <br />The MCL has been set at 70 ppb because EPA believes, given present technology and <br />resources, this is the lowest level to which water systems can reasonably be required to <br />remove this contaminant should it occur in drinking water. <br />These drinking water standards and the regulations for ensuring these standards aze met, <br />are called National Primary Drinking Water Regulations. All public water supplies must <br />abide by these regulations. <br />What are the Health Effects? <br />Short-term: EPA has found 2,4-D to potentially cause the following health effects when <br />people are exposed [o it at levels above the MCL for relatively short periods of time: <br />nervous system damage. <br />Long-term: 2,4-D has the potential to cause the following effects from a lifetime <br />exposure at levels above the MCL: damage to the nervous system, kidneys and liver. <br />How much 2,4-D is produced and released to the environment? <br />Production of 2,4-D was 45.1 million Ibs in 1982. 1991 data indicates only that <br />2 of 5 11/17/98 8:39 P..: <br />