Abstract:
Five representative wells were selected to study the impact of agriculture practices on ground
water quality in Kaluthavalai area of the Batticaloa district in Sri Lanka. Sampling has been done
at monthly intervals. Ground water samples from four representative sampling stations from
agricultural areas and one sampling station from a non-agricultural area at Kaluthavalai in the
Batticaloa district were analyzed for N, P, K and heavy metals to determine the ground water
pollution. The results from this study revealed that the pollution of ground water due to the
application of N, P, and K fertilizers has reached to the point of serious concern. Therefore,
preventive measures must be imposed to protect regional natural water resources and drinking
water quality. The results also revealed that the ground water in Kaluthavalai agricultural area has
high concentration of zinc and lead and non-agricultural area has high concentration of iron and
lead.