StacksVerified U.S. regulatory reference

40 CFR §420.44

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below.
  1. (a)Basic oxygen furnace steelmaking—semi-wet; and electric arc furnace steelmaking—semi-wet. No discharge of process wastewater pollutants to navigable waters.
  2. (b)Basic oxygen furnace steelmaking—wet-suppressed combustion.
  3. (c)Basic oxygen furnace steelmaking—wet open combustion; and electric arc furnace steelmaking—wet.