Connecticut Department of Energy & Environmental Protection

Contaminants of Emerging Concern

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  • Reducing and Preventing Releases of PFAS-Containing Firefighting Foam

    One of the key pollution prevention recommendations in the State’s PFAS Action Plan was to discontinue use of PFAS-containing firefighting foam where possible. This page describes requirements of the 2021 Act Concerning the Use of Perfluoroalkyl or Polyfluoroalkyl Substances in Class B Firefighting Foam, which includes efforts to develop a 'take back' program to recover PFAS-containing firefighting foam from municipalities, to identify PFAS-free foam replacements, and to develop guidance for decontaminating fire apparatus that previously contained PFAS-containing foam.

  • PFAS Minimizing Environmental Exposure

    A summary of DEEP's efforts to protect human health by minimizing environmental exposure to PFAS.

  • Prevention of PFAS Pollution by Minimizing Future Releases

    Information about Connecticut's efforts to minimize future releases of PFAS to the environment including implementation of a firefighting foam take back program and decontamination pilot project, efforts to understand PFAS in consumer packaging, and legislation to limit PFAS in food packaging.

  • Per- and Polyfluoroalkyl Substances (PFAS)

    DEEP's main PFAS page which contains links to various webpages related to per- and polyfluoroalkyl substances (PFAS).

  • Contaminants of Emerging Concern

    An emerging contaminant is a chemical or material characterized by a perceived, potential, or real threat to human health or the environment or by a lack of published health standards. General information on emerging contaminants, as well as perchlorate, nanomaterials, and pharmaceuticals and personal care products.

  • Introduction to Per- and Polyfluoroalkyl Substances (PFAS)

    Per- and polyfluorinated alkyl substances are a group of over 4,000 manmade chemicals, collectively referred to as PFAS, that have recently entered the national spotlight as emerging contaminants with serious adverse impacts on human health, even at low concentrations in the parts per trillion range.

  • PFAS Academic Collaborations

    Information regarding Connecticut PFAS-related research collaborations and PFAS-specific student internship opportunities at CT DEEP.

  • Private Wells and PFAS

    Guidance for private well owners who have tested their drinking water for PFAS or are considering doing so.

  • PFAS Information for Municipalities

    Information regarding PFAS topics of municipal concern.

  • PFAS Education, Outreach and Communication

    Information regarding CT DEEP efforts to enhance education, outreach and communication on PFAS.

  • PFAS Information for Environmental Professionals

    Information for LEPs about when to test for PFAS, which PFAS to test for, sample collection guidance, analytical methods, remediation, and disposal of PFAS waste.

  • 1,4-Dioxane

    Information on 1,4-dioxane, including industrial uses, analytic methods, behavior in the environment, and links to additional information on 1,4-dioxane.