2024 42 USC 6939e – Federally owned treatment works

2023 42 USC 6939e – Federally owned treatment works

2022 42 USC 6939e – Federally owned treatment works

2021 42 USC 6939e – Federally owned treatment works

2020 42 USC 6939e – Federally owned treatment works

2018 42 USC 6939e – Federally owned treatment works

2017 42 USC 6939e – Federally owned treatment works

2015 42 USC 6939e – Federally owned treatment works

2014 42 USC 6939e – Federally owned treatment works