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Official Website

of the Commonwealth of Pennsylvania

    The .gov means its official.

    Local, state, and federal government websites often end in .gov. Commonwealth of Pennsylvania government websites and email systems use "pennsylvania.gov" or "pa.gov" at the end of the address. Before sharing sensitive or personal information, make sure you're on an official state website. 

    Regulated substances come in three types:

    1. Hazardous substances defined in the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). The CERCLA list consists of individual compounds and large groups of compounds. If a chemical is a member of one of the groups, it is regulated in the same manner as one of the individually listed compounds.
    2. Liquid petroleum products.
    3. Other substances the department added by regulation including: biodiesel, synthetic fuels and oils, tung oils, wood-derivative oils, inedible seed oils from plants, and pure ethanol intended for blending with motor fuels.

    The file containing the complete regulated substance booklet can be found at the eLibrary site or click on this link Regulated Substances List (2630-BK-DEP2724) (PDF). This is revision 10, dated May 26, 2020.

    If you have any questions, call customer service at (toll-free in Pennsylvania) 1-800-428-2657, or 717-772-5599.