A bill to amend the Federal Water Pollution Control Act.

Amends the Federal Water Pollution Control Act to authorize the Administrator of the Environmental Protection Agency to approve user charge systems based upon ad valorem taxation if he determines that: (1) changing from such method would create hardships; and (2) using such method would substantially achieve the goal of proportionality among classes of recipients and individual users. Stipulates that indirect costs not attributable to individual users shall be equitably prorated among all user classes.