The fish were first developed to be indicators of polluted water.

"Forty percent of the world will live in polluted water," he said.

The family now depends on polluted water from the river, he said.

Nor will life be able to thrive in polluted water.

But even polluted water against a city skyline is beautiful.

There are many pools for swimming in the polluted water.

The polluted water is then sent to a number of places.

More often, we hear a jungle story of fire ants and polluted water.

Our nation has made significant progress in cleaning up polluted waters.

It can also be used to stop fish from entering polluted water.