{"data":{"id":"us/40-cfr-141.627","jurisdiction":"us","citation":"40 CFR 141.627","heading":"Requirements for remaining on reduced TTHM and HAA5 monitoring based on subpart L results.","body":"You may remain on reduced monitoring after the dates identified in § 141.620(c) for compliance with this subpart only if you qualify for a 40/30 certification under § 141.603 or have received a very small system waiver under § 141.604, plus you meet the reduced monitoring criteria in § 141.623(a), and you do not change or add monitoring locations from those used for compliance monitoring under subpart L of this part. If your monitoring locations under this subpart differ from your monitoring locations under subpart L of this part, you may not remain on reduced monitoring after the dates identified in § 141.620(c) for compliance with this subpart.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER D—WATER PROGRAMS","PART 141—NATIONAL PRIMARY DRINKING WATER REGULATIONS","Subpart V—Stage 2 Disinfection Byproducts Requirements"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"67a0844c722c546fab0c073f2e24ef51977fc8dab35494ee718019ab5769d784","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-141.626","next":"us/40-cfr-141.628"},"notice":"GroundRules: Original legal text. Not legal advice."}