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Downloads folder for Toxicology Publications

Statewide and regional environmental updates on air quality, drinking water quality, lead levels, cancer incidence, and asthma hospitalization rates (Revised 3/23).

This page contains the TCEQ Guidelines to Develop Toxicity Factors, which is a technical guide written and used by the TCEQ's Toxicology Division (TD) to develop health- and welfare-based inhalation toxicity values, and health-based oral toxicity values.