Regulations last checked for updates: Oct 17, 2024

Title 40 - Protection of Environment last revised: Oct 15, 2024
All TitlesTitle 40Chapter IPart 439 - PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY
View all text of Part 439 [§ 439.0 - § 439.52]
§ 439.4 - General limitation or standard for pH.

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.

[68 FR 12271, Mar. 13, 2003]
authority: 33 U.S.C. 1311,1314,1316,1317,1318,1342
source: 48 FR 49821, Oct. 27, 1983, unless otherwise noted.
cite as: 40 CFR 439.4
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