Size and Type of the City:

For large city, per capita water requirement is more than that of a small town. For bigger city, where population density is high, special arrangement has to be made for fire fighting also. While this kind of demand might be taken up separately, it enhances per capita water demand. Large cities have sewer system for waste water disposal and for this water requirement may be as high as three times as that of open drain system. A town may be a smaller one but if it is an industrial town then per capita demand may be higher as compared to a big city because of indirect use of water. Although an average value of 135 lcpd is taken for an Indian town but the total demand may go as high as 240 to 260 lcpd for a big or an industrial city. The values vary from 75 lcpd to 260 lcpd depending upon size and location of a town or city.

Availability of Sewer

If sewage system has been provided in the locality, consumption of water will be more and per capita demand may go high, because for flow of sewage in closed conduits sufficient water should be available. Table suggests tentative water supply levels for various schemes.

Table : Recommended Per Capita Water Supply Levels for Designing Schemes