The document outlines principles for expanding water supply in a study area, including establishing priority service areas based on demand analysis, designing new service areas based on management efficiency and cost, and improving existing service areas by increasing water pressure and hours of service.

16. PREPARATION OF WATER SUPPLY SCHEME
The basic principles for the expansion of the water supply in the Study Area will be finalized by taking
into consideration the projected water demand of priority supply areas. The basic design policy will
include the following:
(1) Establishment of service area In addition to the existing service area, any extension will be finalized
based on a priority analysis of the said area. Furthermore, the service area must be designed with
attention given to its overall expanse; while management efficiency and economy should be the
prime considerations in studying the plan of the facility to be constructed.
(2) Service level For the existing service areas, increasing water pressure and hours of service are the
main improvements needed to upgrade service levels.