yourstate.us
Home / United States / 40 CFR
40 CFR 421.295

§ 421.295 Pretreatment standards for existing sources.

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

Get this as JSONEmbed this
Cite this
Citation
40 CFR 421.295, § 421.295 Pretreatment standards for existing sources, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/189125
Permanent ID
ys:prov:189125@1
SHA-256
7c40adaf6b261c9f4502ebf2ecad6d3fb75138405cb73996cf8f6320fb1b74bc

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

Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart which introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for existing sources. The mass of wastewater pollutants in secondary tin process wastewater introduced into a POTW must not exceed the following values: (a) Tin smelter SO2 scrubber. PSES for the Secondary Tin Subcategory (b) Dealuminizing rinse. PSES for the Secondary Tin Subcategory (c) Tin mud acid neutralization filtrate. PSES for the Secondary Tin Subcategory (d) Tin hydroxide wash. PSES for the Secondary Tin Subcategory (e) Spent electrowinning solution from new scrap. PSES for the Secondary Tin Subcategory (f) Spent electrowinning solution from municipal solid waste. PSES for the Secondary Tin Subcategory (g) Tin hydroxide supernatant from scrap. PSES for the Secondary Tin Subcategory (h) Tin hydroxide supernatant from plating solutions and sludges. PSES for the Secondary Tin Subcategory (i) Tin hydroxide filtrate. PSES for the Secondary Tin Subcategory

Legislative history

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