{"data":{"id":"us/40-cfr-439.4","jurisdiction":"us","citation":"40 CFR 439.4","heading":"General limitation or standard for pH.","body":"The pH must remain within the range 6.0 to 9.0 in any discharge subject to BPT, BCT or NSPS limitations or standards in this part.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER N—EFFLUENT GUIDELINES AND STANDARDS","PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY"],"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":"e0512ef85eddcd6323a13d17dde491d4338e79be99a292b73080c8fc73305eb1","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-439.3","next":"us/40-cfr-439.10"},"notice":"GroundRules: Original legal text. Not legal advice."}