– Da Nang city water supply system has designed capacity of
216,000 m3 / day. The actual output is 310,000 m3 / day. Water shortage
usually occurs in the summer months when the salinity is high at the Cau
Do project, the water shortage is about 7500 m3 / day.
– The water supply system inside the house is designed mainly based
on the experience of the designer, have not been paid attention to the
pressure of the water supply network outside.
– Water saving sanitary equipment have not been used recently.
According to survey results, about 27.3% of households using shower
and 33.3% of households using water saving wash basin faucets. The
flow of sanitary equipments is still large thus the potential for saving
water is quite high.
– The amount of water used for the average daily living needs of 134
liters / person/day. The demand for bathing (22%), sanitation (20%),
kitchen (25%), washing (18%), cleaning house (3%), face & hand
washing (4%) and another (8%).
– Proposed average water volume for living needs in Da Nang city
for design in 2030 orientation: 160 l / person/day.
– The research has proposed the solution of using water properly.
The amount of water saved when replacing water-saving sanitation is
(12-15)% and when combining both measures of sanitation and water
usage is 18% .
– Significant social and environmental meaning: The amount of
water saved for the whole city is calculated from 8,975.60 (m3/day) to
23,863.66 (m3/day), which could solve the problem of water shortage for
Da Nang city . Greenhouse gas emissions can decrease from 7,234
tCO2/day (2,640.4 tCO2/year) to 19.234 tCO2/day (7020,198 tCO2/yr).