Three Maine fuel companies will pay fines to the U.S. Environmental Protection Agency for failing to report on-site chemicals as required by federal law.

Dixfield Discount Fuel Co. of Peru, Lisbon Fuel Co. of Lisbon Falls and Murray Oil Co. of Turner, as well as eight companies based in Connecticut, Massachusetts and Rhode Island, have each been assessed $2,000 fines by the EPA.

“Chemical reporting is very important for the public at large,” said Robert Varney, regional administrator for the EPA’s New England office. “Regular reporting of hazardous chemicals helps first-responders to protect themselves, and protect the public, if there is a fire or other dangerous event at a facility.”

The EPA announced the settlement with the 11 companies on Wednesday. The companies violated the federal Emergency Planning and Community Right-to-Know Act, which requires annual reports of the nature, amount and location of hazardous chemicals stored at each facility.

The law has been on the books “at least 20 years” and the Maine companies were cited for failing to report the details of their on-site oil holdings, said EPA spokesman David Deegan.

Only companies that store 10,000 pounds or more of hazardous substances on site are subject to the law. The next reporting deadline is March 1.

The EPA, in addition to levying fines, works to inform companies of their federal obligations and has held 13 compliance assistance conferences in New England.

Representatives from the three Maine fuel companies were unavailable for comment Wednesday afternoon.