part_subject: "NATIONAL PRIMARY DRINKING WATER REGULATIONS IMPLEMENTATION"
subpart_code: "K"
subpart_subject: "Variances for Small System"
section_number: "142.303"
section_subject: "Which size public water systems can receive a small system variance?"
cfr_reference: "40 CFR 142.303"
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"
---
(a)A State exercising primary enforcement responsibility for public water systems (or the Administrator for other systems) may grant a small system variance to public water systems serving 3,300 or fewer persons.
(b)With the approval of the Administrator pursuant to § 142.312, a State exercising primary enforcement responsibility for public water systems may grant a small system variance to public water systems serving more than 3,300 persons but fewer than 10,000 persons.
(c)In determining the number of persons served by the public water system, the State or Administrator must include persons served by consecutive systems. A small system variance granted to a public water system would also apply to any consecutive system served by it.