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The main sources of detailed information on drinking water are a "Study on Water Demand for Non-agricultural Use from Narmada Project" by the Gujarat Water Supply and Sewerage Board (GWSSB 1983), and a recent Narmada Control Authority (NCA) pamphlet on drinking water (NCA 1991). While the former is now quite dated, it is the only detailed source of information available. According to these documents (See Table 3), the total projected water requirement in 2021 for domestic, industrial and thermal power projects is estimated to be 1.37 MAF (Million Acre Feet). 0.48 MAF are available from sources outside the SSP coverage, and 0.14 MAF are available from groundwater sources. The balance requirement of 0.75 MAF is to be provided by SSP, which works out to a gross demand of 1.06 MAF after adding losses in the system (GWSSB 1983).

Non-agricultural Water Demand in the SSP Command (2021)
(All figures in MAF)
Demand Source Total Demand From Local Sources Recharge Withdrawal Balance Requirements
Urban 1.01
Rural 0.2 0.48 0.14 0.75
Industrial 0.16
Total 1.37 0.48 0.14 0.75

Source : GOG 1983:3

The NWDTA allocated 1.06 MAF for non-agricultural uses from Gujarat's share of 9 MAF water from the Narmada. Of these 1.06 MAF, 0.853 MAF have been set aside for drinking water purposes and the rest (0.207 MAF) for industrial use.

Several changes have appeared between the two documents. According to the detailed study (GWSSB 1983: 18) , drinking water requirements are 227 litres/capita/day (LPCD) for cities with population more than I million, 140 LPCD for other urban areas, and 70 LPCD for rural areas. However, in the

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