40 CFR § 142.52 - Consideration of an exemption request.

---
identifier: "/us/cfr/t40/s142.52"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 142.52 - Consideration of an exemption request."
title_number: 40
title_name: "Protection of Environment"
section_number: "142.52"
section_name: "Consideration of an exemption request."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "142"
part_name: "NATIONAL PRIMARY DRINKING WATER REGULATIONS IMPLEMENTATION"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 300f, 300g-1, 300g-2, 300g-3, 300g-4, 300g-5, 300g-6, 300j-4, 300j-9, and 300j-11."
regulatory_source: "41 FR 2918, Jan. 20, 1976, unless otherwise noted."
cfr_part: "142"
---


# 142.52 Consideration of an exemption request.

(a) The Administrator shall act on any exemption request submitted pursuant to § 142.51 within 90 days of receipt of the request.

(b) In his consideration of whether the public water system is unable to comply due to compelling factors, the Administrator shall consider such factors as the following:

(1) Construction, installation, or modification of the treatment equipment or systems.

(2) The time needed to put into operation a new treatment facility to replace an existing system which is not in compliance.

(3) Economic feasibility of compliance.