Figure 2From: Assessment of nitrate-N contamination in the Chunnakam aquifer system, Jaffna Peninsula, Sri LankaSpatial and temporal variation of Nitrate-N in Jaffna aquifer system based on well use; a) January and April; b) July and October. D; Domestic wells, D + H; Domestic wells serving home gardens, P; Public wells and F is for farm or agricultural wells (agro wells).Back to article page