yourstate.us
Home / United States / 40 CFR
40 CFR 439.4

§ 439.4 General limitation or standard for pH.

United States · 40 CFR — Protection of Environment · Status: effective

Get this as JSONEmbed this
Cite this
Citation
40 CFR 439.4, § 439.4 General limitation or standard for pH, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/190262
Permanent ID
ys:prov:190262@1
SHA-256
e0512ef85eddcd6323a13d17dde491d4338e79be99a292b73080c8fc73305eb1

The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.

Full text

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.

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.