Home › CFR › Title 40 › Part 122 › Appendix J to Part 12240 CFR Part 122, Appendix J — NPDES Permit Testing Requirements for Publicly Owned Treatment Works (§ 122.21(j))Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link[65 FR 42469, Aug. 4, 2000]