Sathsarani, P.P.M.; Suntharalingam, S.; Devaisy, S.
(Faculty of Applied Science University of Vavuniya Sri Lanka, 2025)
The water resources of the Peraru reservoir are treated by the National Water Supply and
Drainage Board, Vavuniya and distributed to the public for potable and non-potable purposes. However
the water hardness fluctuate ...