Water Pollution Program Enhancements Act of 2000

Reauthorizes appropriations for FY 2001 through 2007 for grants to States for: (1) implementation of nonpoint source pollution control management programs; and (2) groundwater quality protection activities to advance States toward implementation of comprehensive nonpoint source pollution control programs. Makes $200 million available from funds appropriated for such management programs for States to provide grants to landowners to develop and implement nonpoint source control projects to restore or improve water quality of impaired waters that have been identified as a priority for restoration. Limits such grants to 90 percent of project costs.

(Sec. 4) Requires the Administrator of the Environmental Protection Agency to contract with the National Academy of Sciences (NAS) to conduct a study on the: (1) scientific basis underlying the development and implementation of total maximum daily loads; (2) costs of implementing measures to comply with such loads; and (3) availability of alternative programs or mechanisms to reduce the discharge of pollutants from point sources and nonpoint source pollution to achieve water quality standards. Authorizes appropriations. Requires the Administrator to submit such study to specified congressional committees.

(Sec. 5) Directs the Administrator to establish jointly with the States a watershed management pilot program to evaluate the relative water quality improvements resulting from up to five State watershed management programs or strategies that incorporate non-Federal water quality control programs, innovative technologies, and incentives to reduce the discharge of pollutants or total maximum daily load allocations under the Act. Provides that a strategy, to be eligible for consideration in the program, must be expected to achieve environmental results comparable to those of the Federal total maximum daily load program. Requires reports to Congress on the program. Terminates the program after three years after a State is accepted in the program. Authorizes appropriations.

(Sec. 6) Requires the Administrator, prior to finalizing the Proposed Revisions to the National Pollutant Discharge Elimination System Program and Federal Antidegradation Policy and the Proposed Revisions to the Water Quality Planning and Management Regulations Concerning Total Maximum Daily Loads of August 1999, to: (1) review the NAS study prepared under this Act; and (2) take into consideration NAS recommendations in issuing any final regulations. Directs the Administrator, if provisions are included in any final regulation that are not consistent with NAS recommendations, to publish an explanation with the final rule of why such recommendations were not included in the regulation.