What are EPAs drinking water regulations for glyphosate?
EPA has set an enforceable regulation for glyphosate, called a maximum contaminant level (MCL), at 0.7 mg/L or 700 ppb. MCLs are set as close to the health goals as possible, considering cost, benefits and the ability of public water systems to detect and remove contaminants using suitable treatment technologies. In this case, the MCL equals the MCLG, because analytical methods or treatment technology do not pose any limitation. The Phase V Rule, the regulation for glyphosate, became effective in 1994. The Safe Drinking Water Act requires EPA to periodically review the national primary drinking water regulation for each contaminant and revise the regulation, if appropriate. EPA reviewed glyphosate as part of the Six Year Review and determined that the 0.7 mg/L or 700 ppb MCLG and 0.7 mg/L or 700 ppb MCL for glyphosate are still protective of human health.
