BOSTON — The U.S. Environmental Protection Agency says 11 communities in Connecticut, Maine, Massachusetts and New Hampshire will share about $3.6 million to clean up contaminated former industrial sites for redevelopment.

The agency’s brownfields revolving loan fund is providing loans and sub-grants to help clean up the sites. The grants are between $200,000 and $400,000 with an average grant award of $300,000.

Nationally, there are an estimated 450,000 abandoned and contaminated sites.

Recipients include the Southern Maine Regional Planning Commission and Maine Department of Economic and Community Development; the Connecticut cities of Bridgeport and New Haven and the town of Winchester; the cities of Taunton and Worcester in Massachusetts and the city of Nashua, N.H., Regional Economic Development Center of Southern New Hampshire and New Hampshire Department of Environmental Services.