Toxic Substance Control Act: The Toxic Substances Control Act (TSCA) is a federal law that gives the Environmental Protection Agency (EPA) authority to regulate chemicals that may pose a risk to human health or the environment.
Toxicity assessment: the process of determining the potential harmful effects of a substance on humans, animals, or the environment. Toxicity assessments are typically conducted by government agencies or independent organizations.
Toxicity testing: the process of testing a substance to determine its potential harmful effects on humans, animals, or the environment. Toxicity tests are typically conducted by government agencies or independent organizations.
Toxin: a poisonous substance that is produced by an organism and is capable of causing disease when introduced into the body of another organism.
Transient Non-Community Water System (TNCWS): A water system that provides water to fewer than 25 people for at least 60 days per year, and that is not permanently connected to a public water supply system. Transient non-community water systems include but are not limited to construction sites, campgrounds, and temporary housing developments.
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