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Revisions to the Unregulated Contaminant Monitoring Rule (UCMR 4) for Public Water Systems (Final)
Dec. 20, 2016
EPA is finalizing a SDWA rule that requires public water systems to collect occurrence data for contaminants that may be present in drinking water but are not yet subject to EPA's drinking water standards set under the SDWA. This rule identifies eleven analytical methods to support water system monitoring for a total of 30 chemical contaminants, consisting of nine cyanotoxins and one cyanotoxin group; two metals; eight pesticides plus one pesticide manufacturing byproduct (hereinafter collectively referred to as ``pesticides'); three brominated haloacetic acid disinfection byproduct groups; three alcohols; and three semivolatile organic chemicals. EPA is also announcing a public meeting and webinar to discuss the implementation of the UCMR 4. This final rule is effective on 19 January 2017. POC is Brenda D. Parris, Standards and Risk Management Division (SRMD), Office of Ground Water and Drinking Water (OGWDW) (MS 140), EPA, 26 West Martin Luther King Drive, Cincinnati, OH 45268; tel: (513) 569-7961; or email: parris.brenda@epa.gov (Federal Register; 20 December 2016 [Rules and Regulations], pages 92666-92692).
 

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Last Updated: January 22, 2018