Clean and unpolluted water is very important to the Carolina heelsplitters.

The larvae occur in a wide range of habitats, but most species prefer clean, unpolluted water.

Fish that is to be eaten should be caught in unpolluted water.

It is surrounded by very clear and unpolluted waters.

All the men could see down through the clear, unpolluted water, and the pipeline still rising toward the surface.

Marine farmers usually look for sheltered and unpolluted waters rich in nutrients.

Its unpolluted waters are suitable for swimming and fishing.

The unpolluted waters hold a range of fish including wild brown trout and pike.

These plants grow right to the water's edge, and stain the pure unpolluted water the colour of tea.

The wells have been regularly tested, and for many years they have produced only clean, unpolluted water.