TMDL Regulatory Accountability Act of 2000

TMDL Regulatory Accountability Act of 2000 - Requires the Administrator of the Environmental Protection Agency (EPA) to: (1) solicit public comment on revisions to regulations pertaining to the national pollutant discharge elimination system (NPDES) program and the water quality planning and management program published in the Federal Register on July 13, 2000; (2) solicit State comments on the impact of such revisions on implementation and effectiveness of State programs; and (3) maintain a record of public comments and publish a response in the Federal Register.

Directs the Administrator to transmit to Congress an analysis of the monitoring data needed for development and implementation of total maximum daily loads (TMDLs) which shall address data gaps identified by the Comptroller General in a March 2000 report entitled "Water Quality, Key EPA and State Decisions Limited By Inconsistent and Incomplete Data."

Requires the Administrator to make arrangements with the National Academy of Sciences to study and report on the scientific bases underlying the development of TDMLs. Authorizes appropriations.

Directs the Administrator, with respect to the economic analysis performed on regulatory changes identified by the Comptroller General in the June 2000 report entitled "Clean Water Act: Proposed Revisions to EPA Regulations to Clean Up Polluted Waters," to prepare certain statements and analyses required under the Unfunded Mandates Reform Act of 1995 with respect to: (1) significant regulatory actions that may result in expenditures by State, local, and tribal governments or the private sector of $100 million or more annually; and (2) selection of a least costly, most cost-effective, or least burdensome alternative.

Requires the Administrator to conduct analyses of the effects of the revisions to the regulations pertaining to the NPDES and water quality planning and management on small entities.

Directs the Administrator to review the information provided or developed under this Act and consider whether the revisions to such regulations should be changed. Requires an explanation to Congress of the decision to change or not to change such revisions.