Watershed general permit; nutrient discharge, review of allocations by State Water Control Board.

Directs the State Water Control Board to incorporate into the general permit procedures by which it will, every 10 years beginning in 2020, (i) review load allocations to determine whether changes in the use of a facility have halted or reduced nutrient discharges and (ii) determine, prior to reissuing the general permit, the need for reallocations based on a variety of factors, including changes in treatment technologies and land use.