This bill, titled the Clean Water SRF Parity Act of 2025, aims to broaden access to financial assistance from State water pollution control revolving funds (SRFs) under the Federal Water Pollution Control Act. It specifically makes qualified nonprofit entities eligible for aid to construct, acquire, or improve treatment works and other water quality activities. Additionally, it establishes a special rule allowing privately owned treatment works to receive financial assistance for various projects. This assistance for privately owned works can cover improvements, new construction, water conservation, energy reduction, and security measures. A crucial limitation is that such financial aid must primarily and directly benefit the individuals or entities served by the treatment works, rather than its shareholders or owners, as determined by the State. Furthermore, neither qualified nonprofit entities nor privately owned treatment works are eligible for additional subsidization, such as principal forgiveness, from the SRF.