40 CFR § 503.5 - Additional or more stringent requirements.
---identifier: "/us/cfr/t40/s503.5"source: "ecfr"legal_status: "authoritative_unofficial"title: "40 CFR § 503.5 - Additional or more stringent requirements."title_number: 40title_name: "Protection of Environment"section_number: "503.5"section_name: "Additional or more stringent requirements."chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"subchapter_number: "O"subchapter_name: "SEWAGE SLUDGE"part_number: "503"part_name: "STANDARDS FOR THE USE OR DISPOSAL OF SEWAGE SLUDGE"positive_law: falsecurrency: "2026-03-24"last_updated: "2026-03-24"format_version: "1.1.0"generator: "[email protected]"authority: "Sections 405 (d) and (e) of the Clean Water Act, as amended by Pub. L. 95-217, sec. 54(d), 91 Stat. 1591 (33 U.S.C. 1345 (d) and (e)); and Pub. L. 100-4, title IV, sec. 406 (a), (b), 101 Stat., 71, 72 (33 U.S.C. 1251 )."regulatory_source: "58 FR 9387, Feb. 19, 1993, unless otherwise noted."cfr_part: "503"---
Identifier
/us/cfr/t40/s503.5
Currency
2026-03-24
Positive Law
No
Updated
2026-03-24
Chapter
Environmental Protection Agency
Authority
Sections 405 (d) and (e) of the Clean Water Act, as amended by Pub. L. 95-217, sec. 54(d), 91 Stat. 1591 (33 U.S.C. 1345 (d) and (e)); and Pub. L. 100-4, title IV, sec. 406 (a), (b), 101 Stat., 71, 72... Sections 405 (d) and (e) of the Clean Water Act, as amended by Pub. L. 95-217, sec. 54(d), 91 Stat. 1591 (33 U.S.C. 1345 (d) and (e)); and Pub. L. 100-4, title IV, sec. 406 (a), (b), 101 Stat., 71, 72 (33 U.S.C. 1251 ).
# 503.5 Additional or more stringent requirements.(a) On a case-by-case basis, the permitting authority may impose requirements for the use or disposal of sewage sludge in addition to or more stringent than the requirements in this part when necessary to protect public health and the environment from any adverse effect of a pollutant in the sewage sludge.(b) Nothing in this part precludes a State or political subdivision thereof or interstate agency from imposing requirements for the use or disposal of sewage sludge more stringent than the requirements in this part or from imposing additional requirements for the use or disposal of sewage sludge.