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Mercury and Air Toxics Standards (MATS)

Recent Actions

On May 22, 2020, EPA publised a final revised Supplemental Cost Finding for MATS and the Clean Air Act required “risk and technology review.”  Learn more

On April 15, 2020, EPA published a Mercury and Air Toxcis Standards subcategory for certain existing units that fire coal refuse. Learn more

On April 3, 2020, EPA proposed electronic reporting requirements under the Mercury and Air Toxics Standards for Power Plants.  Learn more

Mercury and Air Toxics Standards (MATS)

Cleaner Power Plants

Healthier Americans

Safer Environment

Jerome Bettis talks about asthma and the effects of air pollution.


Public service announcement about the EPA's Mercury
and Air Toxics Standards

Vídeo en español Exit

MATS Benefits by State

EPA's analysis does not include Hawaii, Alaska and the territiories.

Map of the United StatesAlabamaArizonaArkansasCaliforniaColoradoConnecticutDelawareWashington, DCFloridaGeorgiaIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachussetsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaNorthern Mariana IslandsOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasTrust TerritoriesUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyoming