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40 CFR § 405.125 - Standards of performance for new sources.

---
identifier: "/us/cfr/t40/s405.125"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 405.125 - Standards of performance for new sources."
title_number: 40
title_name: "Protection of Environment"
section_number: "405.125"
section_name: "Standards of performance for new sources."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "N"
subchapter_name: "EFFLUENT GUIDELINES AND STANDARDS"
part_number: "405"
part_name: "DAIRY PRODUCTS PROCESSING POINT SOURCE CATEGORY"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Secs. 301, 304 (b) and (c), 306 (b) and (c) and 307(c) of the Federal Water Pollution Control Act, as amended (the Act); 33 U.S.C. 1251, 1311, 1314 (b) and (c), 1316 (b) and (c), and 1317(c); 86 Stat. 816,  Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217."
regulatory_source: "39 FR 18597, May 28, 1974, unless otherwise noted."
cfr_part: "405"
---

# 405.125 Standards of performance for new sources.

The following standards of performance establish the quantity or quality of pollutants or pollutant properties, controlled by this section, which may be discharged by a new source subject to the provisions of this subpart:

|  |  |  |
| --- | --- | --- |
|  | Metric units (kilograms per 1,000 kg of BOD input) |  |
| BOD | 0.220 | 0.110 |
| TSS | 0.275 | .138 |
| pH | () | () |
|  | English units (pounds per 100 lb of BOD input) |  |
| BOD | 0.022 | 0.011 |
| TSS | 0.023 | .014 |
| pH | () | () |
| Within the range 6.0 to 9.0. |  |  |