40 CFR § 122.48 - Requirements for recording and reporting of monitoring results (applicable to State programs, see § 123.25).
---
identifier: "/us/cfr/t40/s122.48"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 122.48 - Requirements for recording and reporting of monitoring results (applicable to State programs, see § 123.25)."
title_number: 40
title_name: "Protection of Environment"
section_number: "122.48"
section_name: "Requirements for recording and reporting of monitoring results (applicable to State programs, see § 123.25)."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "122"
part_name: "EPA ADMINISTERED PERMIT PROGRAMS: THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "The Clean Water Act, 33 U.S.C. 1251"
regulatory_source: "48 FR 14153, Apr. 1, 1983, unless otherwise noted."
cfr_part: "122"
---
# 122.48 Requirements for recording and reporting of monitoring results (applicable to State programs, see § 123.25).
All permits shall specify:
(a) Requirements concerning the proper use, maintenance, and installation, when appropriate, of monitoring equipment or methods (including biological monitoring methods when appropriate);
(b) Required monitoring including type, intervals, and frequency sufficient to yield data which are representative of the monitored activity including, when appropriate, continuous monitoring;
(c) Applicable reporting requirements based upon the impact of the regulated activity and as specified in 40 CFR part 3 (Cross-Media Electronic Reporting Regulation), § 122.44, and 40 CFR part 127 (NPDES Electronic Reporting). Reporting shall be no less frequent than specified in § 122.44. EPA will maintain the start dates for the electronic reporting of monitoring results for each state on its Web site.
[48 FR 14153, Apr. 1, 1983; 50 FR 6940, Feb. 19, 1985; 80 FR 64098, Oct. 22, 2015]