This bill proposes amendments to the Federal Water Pollution Control Act , specifically targeting the duration of National Pollutant Discharge Elimination System (NPDES) permits . The primary change establishes distinct maximum permit terms based on the type of entity receiving the permit. Under the revised provisions, permits issued to a State or municipality would have a fixed term not exceeding 10 years . For all other permittees, the maximum fixed term would be 5 years . Additionally, the bill includes several technical corrections to improve clarity and consistency within Section 402(l)(3) of the Act.