The definitive guide to all there is to know about the TMDL requirements of clean water legislation.

This report discusses the total maximum daily load (TMDL) program which regulates pollutants to ensure that water quality standards can be attained; section 303(d) of the Clean Water Act requires states to identify waters that are impaired by pollution, even after application of pollution controls. The report focuses on new challenges facing the TMDL program, including more complex TMDLs, larger scale impairments, and nonpoint sources.

The Clean Water Act (CWA) requires states to identify waters that are impaired by pollution, even after application of pollution controls. For these waters, states must establish a total maximum daily load (TMDL) of pollutants to ensure that water quality standards can be attained. Implementation was dormant until states and the Environmental Protection Agency (EPA) were prodded by numerous lawsuits. The TMDL program has become controversial, in part because of requirements and costs now facing states to implement this 30-year old provision of the law. In 1999, EPA proposed regulatory changes to strengthen the TMDL program. Industries, cities farmers and others may be required to use new pollution controls to meet TMDL requirements. EPA's proposal was widely criticised and congressional interest has been high. This book explores the lingering dispute between states and industry groups, beginning from the Clinton administration and stretching all the way to the present. However, Congress recognised in the Act that, in many cases, pollution controls implemented by industry and cities would be insufficient, due to pollutant contributions from other unregulated sources.

TMDLs (Total Maximum Daily Loading) define how much of a pollutant a water body can tolerate on a daily basis & still meet the relevant water quality standards. All of the sources of the pollutant in the watershed combined, including non-point sources, are limited to discharging no more than that total limit. EPA is suing states to force them to produce TMDLs. A growing number of California's water bodies are either subject to consent decrees to develop TMDLs, or are the subject of notices of intent to file lawsuits that may have that outcome. This report addresses California's many problems in establishing TMDLs for its impaired water bodies.