It was rapidly adopted by hospitals, laboratories and for use in domestic water filtration throughout the world.

I don't know how many people are interested in water filtration.

They're also responsible for water filtration, and they help reduce erosion and runoff.

There were problems with increasing water filtration through dam concrete also.

Aid officials say Iraq still needs to upgrade its water filtration and sewage treatment plants.

Soil is a natural system of water filtration.

Such a filtration system may be one way to provide cheap water filtration for people in developing nations.

The town lacks a water filtration or treatment system.

The average town manager knows nothing about water filtration.

The chemicals used in large water filtration are just more concentrated to do a more effective job.