['Water Programs']

['Water Quality', 'New Source Performance', 'Total Maximum Daily Loads', 'Toxic Water Pollutants', 'Water Programs']

07/19/2025

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Water Programs - Water Quality

§425.94 New source performance standards (NSPS).

RegSense Toxic Water Pollutants New Source Performance Water Quality CFR Regulations Water Programs Total Maximum Daily Loads CFR Section Water Programs English Focus Area USA

Any new source subject to this subpart must achieve the following new source performance standards (NSPS):

Pollutant or pollutant property	NSPS
Pollutant or pollutant property	Maximum for any 1 day	Maximum for monthly average
¹ Within the range 6.0 to 9.0.
	Kg/kkg (or pounds per 1,000 lb) of raw material
BOD₅	3.5	1.6
TSS	5.1	2.3
Oil & Grease	1.5	0.66
Total Chromium	0.09	0.03
pH	(¹)	(¹)

['Water Programs']

['Water Quality', 'New Source Performance', 'Total Maximum Daily Loads', 'Toxic Water Pollutants', 'Water Programs']

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