Provides guidance on the general approach & procedures for conducting Toxicity Reduction Evaluation (TRE) at municipal wastewater treatment plants. TREs are important tools to use to identify & reduce or eliminate toxicity in a wastewater discharge. TREs may be required by the discharger's permit or through state or Fed. enforce. actions. Dischargers can use the guidance to evaluate the nature & sources of effluent toxicity (ET) before a TRE becomes a regulatory require. Whether the TRE is voluntary or mandated, this guidance, which describes the approaches that have been successfully used in municipal TREs, can help to prepare & execute a plan to address ET. Illus. Also includes a 9-page EPA report, Assessing Contaminant Sensitivity of Endangered & Threatened Species: Effluent Toxicity TestsÓ (Sept. 1999).

This timely new book presents practical information about the effective implementation of water-quality-based toxics control for wastewater treatment plants. It addresses five main subject areas, including approaches to toxics control, legal issues, toxicity identification and reduction evaluations, whole effluent toxicity testing, and chemical specific limits. Case examples from actual experiences illustrate workable solutions for implementing new water-quality-based permit requirements. The book provides a useful reference for wastewater treatment plant personnel, industrial wastewater treatment professionals, government agency regulators, environmental consultants, and environmental attorneys.