Conn. treatment plants discharging raw sewage

Storm surge hits a small tree as winds from Hurricane Sandy reach Seaside Park in Bridgeport, Conn., Monday, Oct. 29, 2012. Water from Long Island Sound spilled into roadways and towns along the Connecticut shoreline Monday, the first signs of flooding from a storm that threatens to deliver a devastating surge of seawater. (AP Photo/Jessica Hill)

HARTFORD, Conn. (AP) — Millions of gallons of untreated or partially treated sewage spilled into Long Island Sound and other Connecticut waterways during flooding and power outages caused by superstorm Sandy, officials said Tuesday.

The state Department of Public Health urged people to stay away from floodwaters because they may be contaminated by sewer system discharges or sewage backups on private properties. The Department of Energy and Environmental Protection said the discharges weren't expected harm the environment.

Bridgeport Mayor Bill Finch urged residents Monday night to avoid flushing toilets, taking showers and washing dishes because the treatment plants were flooded. He said he wasn't expecting any contamination problems, adding that discharges of untreated sewage happen from time to time during heavy rains.

"Whenever you have a large (water) incident, you have bypass," Finch said. "There's always going to be peak incidents during the year, eight or nine peak incidents."

Discharges of untreated or partially treated sewage into waterways were reported in Branford, Bridgeport, East Lyme, Fairfield, Greenwich, Ledyard, New Hartford and New Haven, according to the Department of Energy and Environmental Protection. Thirty-one of the 89 treatment plants in the state and 308 sewage pumping stations were running on backup generators Tuesday, officials said.

Similar problems were reported in other states hit by the storm. In Maryland, a power outage at a water treatment plant resulted in a sewage overflow of 2 million gallons per hour into the main stem of the Little Patuxent River. Because of the severity of the storm, officials said they could take no immediate action to mitigate the damage.

In Bridgeport, 15 million to 20 million gallons of partially treated sewage went into Long Island Sound during the brunt of the storm Monday when the city's two treatment plants were inundated by tidal surges, said Ted Grabarz, chairman of the city's Water Pollution Control Authority and director of public facilities.

In Ledyard, a backup generator on the town's treatment plant failed after the power went out during the storm, leading to a system backup and forcing officials to pump about 60,000 gallons of raw sewage into Seth Williams Brook, said Stephen Banks, supervisor of the town's Water Pollution Control Authority. Workers fixed the generator and no major problems were reported.

"We were concerned that it would back up into the people's homes," Banks said.

DEEP officials said there were no sewage spill cleanup plans.

"Sewage breaks down in the waters and does get washed into greater waters and greater volumes of waters, so it is diluted," spokesman Dennis Schain said. "There's not much to do."

Gov. Dannel P. Malloy quipped Tuesday that for "the immediate time being, no one should eat the clams or oysters" from the area.