Infectious diarrhea is a problem because the country has neither electricity nor chlorine to ensure clean water.

They dammed the stream higher up to ensure fast flowing water: quite a modern facility for the 13th century.

Watch this video about how to ensure clean water for the world on HowStuffWorks.

The weir was constructed to ensure enough water for Newark.

This could have been a hunt in the desert, and even Kyrtian was not entirely sure that magic would be enough to ensure water for everyone.

She ensures safe water and air for the crew of the International Space Station.

I can do this while supporting smart policies that ensure clean air and water.

The pumping engine was an important part of productive rice farming in the area to ensure enough water to flood the fields.

We hope that this directive will ensure high-quality water for the Irish people.

To ensure water for the moats there was a series of dams.