The suitability of the project to expand the County supply and servicing costs and rewards of serving BW1. The study found that the expansion project will need plumbing service, manufacturing district of 76.05 cubic meters per day to 50 litres of water are one per person, per day. Define distribution rate equal to 6 baht per cubic metres at a cost of expanding the zone system and the plumbing is equal to 212,127 baht and revenue equals 164, 267 baht. The net present value (NPV) return-equivalent to the ratio of the present value of 74,859 yield per cost (B/C ratio) equal to 0.774.
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