part_subject: "NATIONAL PRIMARY DRINKING WATER REGULATIONS IMPLEMENTATION"
subpart_code: "G"
subpart_subject: "Identification of Best Technology, Treatment Techniques or Other Means Generally Available"
section_number: "142.63"
section_subject: "Variances and exemptions from the maximum contaminant level for total coliforms."
cfr_reference: "40 CFR 142.63"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 136 to 149"
revised_date: "Revised as of July 1, 2019"
publication_date: "As of July 1, 2019"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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(a)No variances or exemptions from the maximum contaminant level in § 141.63 of this chapter are permitted.
(b)EPA has stayed this section as it relates to the total coliform MCL of § 141.63(a) of this chapter for systems that demonstrate to the State that the violation of the total coliform MCL is due to a persistent growth of total coliforms in the distribution system rather than fecal or pathogenic contamination, a treatment lapse or deficiency, or a problem in the operation or maintenance of the distribution system. This stay is applicable until March 31, 2016, at which time the total coliform MCL is no longer applicable.