{"abstract":"The Safe Drinking Water Act (SDWA) requires the U.S. Environmental Protection Agency (EPA) to conduct a review every six years of existing national primary drinking water regulations (NPDWRs) and determine which, if any, need to be revised. The purpose of the review, called the Six-Year Review, is to evaluate current information for regulated contaminants to determine if there is new information on health effects, treatment technologies, analytical methods, occurrence and exposure, implementation and/or other factors that provides a health or technical basis to support a regulatory revision that will improve or strengthen public health protection. EPA has completed a detailed review of 76 NPDWRs and at this time has determined that eight NPDWRs are candidates for regulatory revision. The eight NPDWRs are included in the Stage 1 and the Stage 2 Disinfectants and Disinfection Byproducts Rules, the Surface Water Treatment Rule, the Interim Enhanced Surface Water Treatment Rule and the Long Term 1 Enhanced Surface Water Treatment Rule. EPA requests comments on the eight NPDWRs identified as candidates for revision and will consider comments and data as it proceeds with determining whether further action is needed. In addition, as part of this Six-Year Review, EPA identified 12 other NPDWRs that were or continue to be addressed in recently completed, ongoing or pending regulatory actions. EPA thus excluded those 12 NPDWRs from detailed review. This document is not a final regulatory decision, but rather the initiation of a process that will involve more detailed analyses of factors relevant to deciding whether a rulemaking to revise an NPDWR should be initiated.","action":"Request for public comments.","agencies":[{"raw_name":"ENVIRONMENTAL PROTECTION AGENCY","name":"Environmental Protection Agency","id":145,"url":"https://www.federalregister.gov/agencies/environmental-protection-agency","json_url":"https://www.federalregister.gov/api/v1/agencies/145","parent_id":null,"slug":"environmental-protection-agency"}],"body_html_url":"https://www.federalregister.gov/documents/full_text/html/2017/01/11/2016-31262.html","cfr_references":[{"chapter":null,"citation_url":null,"part":141,"title":40}],"citation":"82 FR 3518","comment_url":null,"comments_close_on":"2017-03-13","correction_of":null,"corrections":[],"dates":"Comments must be received on or before March 13, 2017.","disposition_notes":null,"docket_ids":["EPA-HQ-OW-2016-0627","FRL-9957-49-OW"],"dockets":[{"supporting_documents":[{"title":"Occurrence Data for the Unregulated Contaminant Monitoring Rule","document_id":"EPA-HQ-OW-2016-0627-0211"},{"title":"Interim Primary Drinking Water Regulations; Amendments","document_id":"EPA-HQ-OW-2016-0627-0210"},{"title":"Technologies and Costs Document for the Final Long Term 2 Enhanced Surface Water Treatment Rule and Final Stage 2 Disinfectants and Disinfection Byproducts Rule","document_id":"EPA-HQ-OW-2016-0627-0209"},{"title":"Six- Year Review 3 Technical Support Document for Nitrosamines","document_id":"EPA-HQ-OW-2016-0627-0208"},{"title":"National Primary Drinking Water Regulations; Announcement of the Results of EPA’s Review of Existing Drinking Water Standards and Request for Public Comment and/or Information on Related Issues; Notice  (75 FR 15000)","document_id":"EPA-HQ-OW-2016-0627-0204"},{"title":"Agency Information Collection Activities; Submission to OMB for Review and Approval; Comment Request; Contaminant Occurrence Data in Support of EPA's Third Six-Year Review of National Primary Drinking Water Regulations (Renewal); EPA ICR No. 2231.02, OMB ","document_id":"EPA-HQ-OW-2016-0627-0203"},{"title":"Analytical Feasibility Support Document for the Third Six-Year Review of Existing National Primary Drinking Water Regulations: Chemical Phase Rules and Radionuclides Rules","document_id":"EPA-HQ-OW-2016-0627-0135"},{"title":"National Primary Drinking Water Regulations; Filtration, Disinfection; Turbidity, Giardia lamblia, Viruses, Legionella, and Heterotrophic Bacteria; Final Rule. Part III.","document_id":"EPA-HQ-OW-2016-0627-0129"},{"title":"Water treatment implications after the High Park Wildfire, Colorado","document_id":"EPA-HQ-OW-2016-0627-0124"},{"title":"Disposition of Bromodichloromethane in Humans Following Oral and\nDermal Exposure","document_id":"EPA-HQ-OW-2016-0627-0089"}],"agency_name":"EPA","documents":[{"comment_count":71,"comment_start_date":"2017-01-11","updated_at":"2023-02-28T19:26:08.421-05:00","comment_url":"https://www.regulations.gov/commenton/EPA-HQ-OW-2016-0627-0001","allow_late_comments":null,"id":"EPA-HQ-OW-2016-0627-0001","comment_end_date":"2017-03-14","regulations_dot_gov_open_for_comment":false}],"supporting_documents_count":218,"id":"EPA-HQ-OW-2016-0627","title":"National Primary Drinking Water Regulations; Announcement of the Results of EPA’s Review of Existing Drinking Water Standards and Request for Public Comment and/or Information on Related Issues "}],"document_number":"2016-31262","effective_on":null,"end_page":3552,"executive_order_notes":null,"executive_order_number":null,"full_text_xml_url":"https://www.federalregister.gov/documents/full_text/xml/2017/01/11/2016-31262.xml","html_url":"https://www.federalregister.gov/documents/2017/01/11/2016-31262/national-primary-drinking-water-regulations-announcement-of-the-results-of-epas-review-of-existing","images":{"EP11JA17.006":{"large":"https://img.federalregister.gov/EP11JA17.006/EP11JA17.006_large.png","original_size":"https://img.federalregister.gov/EP11JA17.006/EP11JA17.006_original_size.png"}},"images_metadata":{"EP11JA17.006":{"large":{"identifier":"EP11JA17.006","content_type":"image/png","size":41434,"width":823,"sha":"f9eec604391fa4adc988309f5394c527","url":"https://img.federalregister.gov/EP11JA17.006/EP11JA17.006_large.png","height":736},"original_size":{"identifier":"EP11JA17.006","content_type":"image/png","size":19103,"width":1509,"sha":"187aaa14a242e3485f573ac658c9cd9f","url":"https://img.federalregister.gov/EP11JA17.006/EP11JA17.006_original_size.png","height":1349}}},"json_url":"https://www.federalregister.gov/api/v1/documents/2016-31262?publication_date=2017-01-11","mods_url":"https://www.govinfo.gov/metadata/granule/FR-2017-01-11/2016-31262/mods.xml","not_received_for_publication":null,"page_length":35,"page_views":{"count":8354,"last_updated":"2026-08-25 08:15:04 -0400"},"pdf_url":"https://www.govinfo.gov/content/pkg/FR-2017-01-11/pdf/2016-31262.pdf","presidential_document_number":null,"proclamation_number":null,"public_inspection_pdf_url":"https://public-inspection.federalregister.gov/2016-31262.pdf?1484055927","publication_date":"2017-01-11","raw_text_url":"https://www.federalregister.gov/documents/full_text/text/2017/01/11/2016-31262.txt","regulation_id_number_info":{"2040-ZA26":null},"regulation_id_numbers":["2040-ZA26"],"regulations_dot_gov_info":{"supporting_documents":[{"title":"Occurrence Data for the Unregulated Contaminant Monitoring Rule","document_id":"EPA-HQ-OW-2016-0627-0211"},{"title":"Interim Primary Drinking Water Regulations; Amendments","document_id":"EPA-HQ-OW-2016-0627-0210"},{"title":"Technologies and Costs Document for the Final Long Term 2 Enhanced Surface Water Treatment Rule and Final Stage 2 Disinfectants and Disinfection Byproducts Rule","document_id":"EPA-HQ-OW-2016-0627-0209"},{"title":"Six- Year Review 3 Technical Support Document for Nitrosamines","document_id":"EPA-HQ-OW-2016-0627-0208"},{"title":"National Primary Drinking Water Regulations; Announcement of the Results of EPA’s Review of Existing Drinking Water Standards and Request for Public Comment and/or Information on Related Issues; Notice  (75 FR 15000)","document_id":"EPA-HQ-OW-2016-0627-0204"},{"title":"Agency Information Collection Activities; Submission to OMB for Review and Approval; Comment Request; Contaminant Occurrence Data in Support of EPA's Third Six-Year Review of National Primary Drinking Water Regulations (Renewal); EPA ICR No. 2231.02, OMB ","document_id":"EPA-HQ-OW-2016-0627-0203"},{"title":"Analytical Feasibility Support Document for the Third Six-Year Review of Existing National Primary Drinking Water Regulations: Chemical Phase Rules and Radionuclides Rules","document_id":"EPA-HQ-OW-2016-0627-0135"},{"title":"National Primary Drinking Water Regulations; Filtration, Disinfection; Turbidity, Giardia lamblia, Viruses, Legionella, and Heterotrophic Bacteria; Final Rule. 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