This results in an average discharge of 113 million gallons of diluted sewage daily.

Officials said that option is preferred over allowing diluted sewage to back up into sinks, tubs and toilets.

On top of that, more than 500 million gallons of diluted sewage washed into bay waters in Maryland alone during recent storms.

They are effectively emergency valves that allow the release of raw or diluted sewage into rivers to avoid potential problems in drains.

Flooding due to rivers bursting their banks, or broken drains releasing diluted sewage into the garden, are potentially serious.

In these areas, during large rainstorms, diluted sewage overlfows into our rivers and the waterfront through "combined" sewers.

"Usually it's a combination of greatly diluted sewage and surface water, any kind of rainfall that enters the sewer system from the streets," she said.

There’s no windscreen and no side windows, so driving it means swallowing a lot of mud, and in Afghanistan that’s likely to be diluted sewage.

Diluted sewage first seeped between the sandwiched glassy layers overhead, encountering special algae and sunlight.

One of the biggest challenges is to separate the impact of the urban stormwater from that of the diluted sewage in an overflow.

Heavy rains can overwhelm sewage treatment plants and allow partially treated or diluted sewage to enter waterways.

Heavy rainstorms send diluted sewage streaming into the canal through overflow pipes, and, he noted, "the canal has not received a fresh layer of sewage in months."

A second overflow of diluted sewage at the Broad Creek Wastewater Pumping Station in Fort Washington on Wednesday also continued through Thursday morning.

A roaring current carving a chasm through ash-skirted volcanos in the rainy season, Las Canas River is little more than a steamy trickle of diluted sewage from October to May.

Because British sewers are also expected to handle rainwater, a series of storm sewage overflows were provided, which resulted in diluted sewage being discharged into the River Don in times of heavy rainfall.

As a result, 250,000 gallons of untreated but diluted sewage spilled into Mamaroneck Harbor and 6 million gallons of partially treated sewage was discharged into Long Island Sound, said Anthony P. Trelewicz, the county's Environmental Facilities Commissioner.

Rivers in great cities became foul partly as a result of the beneficent introduction of the water-closet; for diluted sewage was thus discharged straight into rivers, whereas before it had been collected as 'night-soil' in concentrated form from privies and used on the land.

Some 4.3 million gallons of diluted sewage overflowed in Upper Marlboro for 14 hours during the storm; about 13.7 million gallons overflowed at an Accokeek wastewater treatment plant; and 2 million more gallons of diluted sewage overflowed at the Broad Creek station for nearly 12 hours.