1981—Par. (1).
Pub. L. 97–117 inserted “field testing of innovative or alternative waste water treatment processes and techniques meeting guidelines promulgated under section
1314
(d)(3) of this title,” after “procedures,”.
1977—Par. (2)(A).
Pub. L. 95–217 inserted “(including land used for the storage of treated wastewater in land treatment systems prior to land application)” after “integral part of the treatment process”.