Historic Water Pollution Management. Penobscot Bay has been the receiving waters for
sewage waste and
industrial waste discharges from bay and river towns since the 19th century. Discharge treatment was primarily dilution until the mid 20th century when the federal government began requiring communities and businesses of all states to meet water pollution control standards. Beginning with the Federal Water Pollution Control Act of 1948, where states were requested to evolve and enforce their own standards, federal water pollution regulation evolved in 1970 to require that any project requiring a federal permit must be certified to meet state standards, then expanded in 1972 to require projects to meet a host of federal standards. The law is now known as the
Clean Water Act of 1972. On June 28, 1966, the State of Maine's Commissioner of Sea and Shore Fisheries, Ronald W. Green, ordered closure of the shellfish beds in the waters of Searsport and Stockton Springs, in upper Penobscot Bay, "due to the polluted condition of the water." The
US Department of the Interior's Water Pollution Control Administration and the
US Public Health Service then conducted a joint investigation of the lower Penobscot River and upper Penobscot Bay "to determine the sources of this pollution, the direction of travel of this pollution and the degree of economic injury involved." In February 1967, the Water Pollution Control Administration (WPCA) published its findings as "Report on Pollution - Navigable Waters of the Penobscot River and Upper Penobscot Bay". The investigation found that the sewage from eleven towns and effluents of thirteen businesses and one university facility were the chief sources of the pollution. According to the report,"substantial economic injury results from the inability to market shellfish or shellfish products in interstate commerce because of pollution caused by sewage and industrial wastes discharged to the Penobscot River and upper Penobscot Bay area and action of state authorities." The WPCA noted that "accordingly the pollution of these navigable waters is subject to
abatement under procedures described in Section 10 of the
Federal Water Pollution Control Act, as amended" The WPCA report recommended specific water quality requirements for these pollution dischargers, and concluded if the identified pollution sources improved their waste treatment practices, the waters of the upper Penobscot Bay communities of
Northport,
Searsport,
Stockton Springs, Penobscot,
Castine,
Islesboro and
Belfast would again be available for commercial and recreational fishing, swimming, pleasure boating, industrial processing and cooling water, wildlife and navigation. ==Fisheries==