There are problems of sewage overflow and contamination, but I would also argue that almost every city has this exact condition, and it's a condition that we're all facing.

I heard that there were alligators in the sewers.

Valves control fluid flow and regulate pressure.

For all the activities like shaving, showering, grooming etc.

Often what jams us up is sewage.

He was there in Bangladesh dealing with the outflow of millions of refugees the largest refugee flow in history up to that point.

Another common complaint relates to the sewage smell inside their houses.

Michael Pritchard Okay. We've got some runoff from a sewage plant farm.

Meanwhile, the ruthless destruction of forests has, as a result, the obstruction of rivers and consequent overflow, which favored the formation of swamps.

The sewage is still thrown in the bay with virtually no treatment.

So different cities around the world treat their waste water differently. Some cities process it.

One exposes the problem of sewage spill on São Conrado Beach.

You had water, sewer networks that allowed for this kind of unchecked expansion.

As of November 2010, less than 50 of the city's sewage receives proper treatment.

Well, the reason we're doing this offshore is because if you look at our coastal cities, there isn't a choice, because we're going to use waste water, as I suggested, and if you look at where most of the waste water treatment plants are, they're embedded in the cities.

Over 2.5 billion people in the world today do not have proper access to water and sanitation.

But there are still major problems in local infrastructure, such as paving roads, sewage and water supply.

It is a little bit like having a waste treatment plant right next to an amusement park ...

If it weren t for the problem with the sewers, we would already have built the house.

We wouldn't tolerate our parks being swamped by human sewage, but beaches are closed a lot in our country.

When untreated, sewage can have serious impacts on the quality of an environment and on the health of people.

If you include all the drain, it takes more than a hundred pints of water to make a pint of beer.

New Orleans As the eye of Hurricane Katrina swept to the northeast, it subjected the city to hurricane conditions for hours.

According to the organisation, half the population in Rio de Janeiro is still without mains water and sewerage . This accounts for nearly 3 million citizens who are to drink dirty water or throw sewage directly into the rivers, lakes and beaches of this wonderful city .

So, I sent them to Boise, Idaho, where they dropped a plastic bottle into the Boise sewer system.

The Riacho Salgadinho is also the destination for most of the sewage system in Maceió downtown.

At the same time a treatment plant that would treat the waste water before reaching the beach was created, but the Rio Águas , which is responsible for the station, does not do its work and dumps all the sewage in natura through this culvert.

The pyramid, if we jam things in the bottom, can get backed up like a sewer line that's clogged.

In southern China in particular, toxins have been discharged with sewage by mining operations and made their way into rice paddies.

Urban planning guides and ensures the orderly development of settlements and satellite communities which commute into and out of urban areas or share resources with it.

The street grid of the city of Lima is laid out with a system of plazas that are similar to roundabouts or junctions.

This uncontrolled growth has caused significant difficulties in terms of traffic, sanitation (including access to safe water), and pollution.

Regal executed his finisher, the Regal Cutter, on Stratus and Stephanie then dumped sewage over Stratus' body.

The waste water that leaks out is water that already now goes into that coastal environment, and the algae that leak out are biodegradable, and because they're living in waste water, they're fresh water algae, which means they can't live in salt water, so they die.

We also set up experiments in San Francisco at one of the three waste water treatment plants, again a facility to test ideas.

And if we jam nutrients, sewage, fertilizer in the base of that food pyramid, it can back up all through it.

The wastewater produced by the city still is not treated and is discharged raw in Santo Antônio River.

Dhaka's unclean water bodies including an inadequate sewage system are blamed for the growth of mosquitos and the diseases they spread.

This is the city of San Francisco, which has 900 miles of sewer pipes under the city already, and it releases its waste water offshore.

It's a city with about all streets of urban zone paved and services of water and sewage to all people.

The remnants of an ancient mangrove swamp, dated at 7000 BC, were discovered during the construction of sewer lines near Dubai Internet City.

If you flush a toilet, your feces will go to the sewage treatment plants, which are sold as assets, not liabilities.

Disposing of wastewater underground will inevitably contaminate water resources, harm our generation, and pass along the damage to the next.

There are two basic approaches to use the waste in the water as a resource (such as constructed wetlands) or strictly as a pollution (such as the majority of today's treatment plants).

However, after a project by the government of the state os São Paulo called Onda Limpa ( Clean Wave ), the percentage of hauses connected to sewage pipes went up to 94 , as of January 2012.