a. Public Water System of the IDAAN (Circle 01):
It is the system through which the inhabitants are supplied drinking water by means of a community system administrated by the IDAAN (National Institute of Water Systems and Sewers).

b. Public Community Water System (Circle 02):
When the water that the occupants of the dwelling drink is provided by a public water system administrated by the community or another private entity.

c. Private Water System (Circles 03):
System of supplying private drinking water provided for exclusive use of the dwelling.

d. Sanitary Well (Circle 04):
When the water that the occupants of the dwelling drink is provided from a sanitary well that is public or private with a pump to extract water. The pump can be manual, motorized or by windmill. Include the protected or covered spring (brocales).

e. Uncovered Spring (Circle 05):
Deep open well from which water is obtained by means of bucket or vessels manipulated by pulleys or simply by ropes.

f. Rainwater (Circle 06):
Water that falls from clouds and is stored in vessels to be drank by the residents of the dwelling.

g) Superficial well (Circle 07):
Also known as natural pool opened to an earth spring and almost always natural.

h) River or stream (Circle 08):
When the supply of drinking water is obtained directly from a river or gully.

i) Cistern Truck (Circle 09):
When the dwelling has installations for getting water from the IDAAN or from the community, but because of shortages the members of the home get drinking water principally from a cistern truck.

j) Other (Circle 10)
In the case that drinking water is obtained by any way different than those described above. Example: When the members of the dwelling consume bottled water.