Regulations last checked for updates: Feb 12, 2026

Title 40 - Protection of Environment last revised: Dec 22, 2026
§ 139.20 - Gas turbines.

(a) The requirements in paragraph (b) of this section apply to discharges from the washing of gas turbine components.

(b) The discharge of untreated gas turbine washwater is prohibited unless infeasible.

authority: 33 U.S.C. 1251
source: 89 FR 82131, Oct. 9, 2024, unless otherwise noted.
cite as: 40 CFR 139.20