It turns out, atrazine is the largest selling product for the largest chemical company in the world.

And this is pure drinking water.

But by 1929, cities around the country had put in underground water pipes.

The house has pipes under the ground to carry dirty water away.

Michael Pritchard Okay.

It's in the water, man!

As we speak, radioactive material is seeping through Fukushima's ground.

And then you had networks that developed.

This water is significant, but it isn't available for human use in a regular way.

Earthquake, flood...

Sewer rat!

Sewers.

The sewers?

This is called kund. We have, in English, surface water and ground water.

Children are standing on a very difficult device to explain.

Like Dale City, I suppose?

Fourteen people live in this place.

Big structures often had drainage tunnels into the sewers in case of flooding down in the subbasements.

Tunnels leads to the sewers, sewers lead to the storm drains... Storm drains leads to sea.

This is the old sewer.

125 for septic.

Water, water, water.

Internet freedom movement.

Another threat is a lack of water.

Give me a glass of water, please.

Please give me a glass of water.

A glass of water, please.

It makes you want to stop working and discuss my case?

Apparently the water flows through an underground reservoir... and Evans City is supplied with artesian systems out of that.

Finally, nearly 30 of all water on Earth is ground water.

There's been a busted pipe in his unit that's caused some damage to the apartment next door.

There's irrigation in the valley, and there's always a little runoff after they do that.

Hover at 25 meters!

...Earth, fire, stone, and water...

The ship sailed down the channel.

It was the greatest disaster in the history of the State of Santa Catarina.

Vampires really jam on sewer systems.

This is a plumbing part. It's called a ptrap.

The other one's down by the water.

Must've burrowed up from the sewers...

This ditch is in front of us?

Sixteen percent, by weight, of the interior contains frozen water, or ice.

Under Los Angeles is a vast and intricate system of huge storm drains... built to siphon off the flash floods of the rainy season.

But then I read on, and I read this

I want a map covering the storm drain system in this area.