Numerous sewage treatment plants throughout New England are at maximum capacity and overflow during periods of heavy rain, sending untreated sewage into Long Island Sound. Millions of people live in New England and Long Island. Heavy rain storms such as Irene have caused scores of sewage treatment plants to overflow, sending untreated waste down to the Long Island Sound.
There are about 100 sewage treatment plants on Long Island Sound in New York, dwarfing the number in Connecticut. The lifespan of water pollution control plants is between 20 and 30 years, at which time costly repairs must be made.