CFR›Title 40›Chapter I›Part 135›Subpart A ContainsSections 135.1–135.5CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 Subpart A—Prior Notice Under the Clean Water Act Sections 135.1 § 135.1 Purpose. 135.2 § 135.2 Service of notice. 135.3 § 135.3 Contents of notice. 135.4 § 135.4 Service of complaint. 135.5 § 135.5 Service of proposed consent judgment. Next B Subpart B—Prior Notice Under the Safe Drinking Water Act