India - Common Property Resources, Sanitation Hygiene Services: NSS 54th Round, Schedule 31, January 1998 - June 1998

If a household obtained drinking water from the same source throughout the last 365 days, the that source is the principal source and there is no supplementary source. If a household, during the last 365 days, obtained drinking water from more than one source, than the one most commonly used will be called the principal source and the next one (in terms of frequency of use) will be called the supplementary source. Thus if a household used source A for 5 months of the year, source B for 4 months, and source C for 3 months, then A and B will be the principal and supplementary source respectively. The codes are :


Tap .......................................................1
Tube well, hand pump ............................2
Well ......................................................3
Tank, pond (reserved for drinking) .........4
Other tank, pond ...................................5
River, canal, lake ...................................6
Spring ...................................................7
Tanker .................................................8
Other ...................................................9


Here “tanker” includes all vehicles used by local authorities, chartable, etc. for supplying water to an area.