Abstract:
The predominant strategy of water conservation is the minimizing the water
wastages. This study was conducted to estimate the water wastage in the Faculty of
Agriculture, University of Ruhuna, and to suggest possibilities to minimize the
water wastage and to reduce the cost bared for water. Primary data were collected
from the documents and informal discussion with the officers of the different
sections in the faculty. Water leakages were measured in a stipulated time period.
According to the pumping hours and volume of tanks, daily water consumption
from the wells was estimated and it was 188.76 m3. Water obtained from National
Water Supply and Drainage Board (NWSDB) in 2007 and 2008 was 48.03 (20.28
%) and 35.02 m3/day (14.78 %). Total cost for water in 2007 and 2008 was Rs.
726,342.00 and 530,283.96, respectively. Water consumption in hostels was
100.08m3/day (44.69 %) while in other sections (Departments, Administration
Complex and Canteen) it was 112.39m /day (50.19 %). Water usage in farm (only
for cattle shed) was 11.46m3/day (5.12 %). Per capita water consumption of students
was 0.274 m3 which was quite higher than the Sri Lankan per capita water
consumption (0.115 m ). Leakages caused to lose 186.224 m (of water in every
month costing about Rs. 7,821.40. Preventing the water leakages alone, it was found
that ~18% of water bill could be reduced. Broken or malfunction taps were higher in
students hostels. Water use in toilet flushing was estimated using number of cistern
tanks, volume of each tank and flushing frequency and it was 39.69m3/day.
Approximately 18 % of water was used for toilet flushing. Since there is no need to
have good quality drinking water for toilet flushing, it could easily be replaced by
other sources of water such as harvested rainwater. It enables the reduction of cost
for water obtained from NWSDB. Even though water consumption in the faculty is
higher due to laboratory work and farm activities, there is a great possibility to
reduced water consumption by changing the attitudes and drawing the attention of
the community for water conservation. Frequent inspection and repairing of water
distribution system can alone prevent the water leaks reducing the water usage by
2.77%.
