part_subject: "NATIONAL PRIMARY DRINKING WATER REGULATIONS"
subpart_code: "W"
subpart_subject: "Enhanced Treatment for"
section_number: "141.708"
section_subject: "Requirements when making a significant change in disinfection practice."
cfr_reference: "40 CFR 141.708"
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)Following the completion of initial source water monitoring under § 141.701(a), a system that plans to make a significant change to its disinfection practice, as defined in paragraph (b) of this section, must develop disinfection profiles and calculate disinfection benchmarks for Giardia lamblia and viruses as described in § 141.709. Prior to changing the disinfection practice, the system must notify the State and must include in this notice the information in paragraphs (a)(1) through (3) of this section.
(1)A completed disinfection profile and disinfection benchmark for Giardia lamblia and viruses as described in § 141.709.
(2)A description of the proposed change in disinfection practice.
(3)An analysis of how the proposed change will affect the current level of disinfection.
(b)Significant changes to disinfection practice are defined as follows: