Raw Water Source
The various sources of water can be classified into two categories:
1. Surface sources
such as
a. Ponds and lakes
b. Streams and rivers
c. Storage reservoirs
d. Oceans, generally not used for water supplies, at present.
2. Sub-surface sources or underground sources
such as
a. Springs
b. Infiltration wells
c. Wells and Tube-wells.
There are two types of sources