For this reason, the Prettyboy is considered a "source water" or drinking water watershed.

As most natural source water in limestone environments the water has a high calcium content.

The first source of chalybeate (ferruginous) water was found in May 1705.

It depends on the condition of the source water and the treatment it receives.

These categories are based upon the level of contamination present, or presumed present, in the source water.

The ridge provides the peaks that supply the source water to the River Yarrow.

The source water for the deionizer can be ground water or tap water.

Having its source water drained away, the lake receded drastically.

Sometimes, beach intakes may also yield source water of lower salinity.

Clean water, known as "source water", still remained scarce and came from underground.