Association of Nitrate, Nitrite, and Total Organic Carbon (TOC) in Drinking Water and Gastrointestinal Disease

Table 1

Nitrate and nitrite levels in wells of the two areas under study in 2012.

Place of sampling	Nitrate concentrations in different months
	February		March		April		June		July		Mean		Std. deviation
	Nitrate; (mg/L)	Nitrite; (mg/L)	Nitrate; (mg/L)	Nitrite; (mg/L)	Nitrate; (mg/L)	Nitrite; (mg/L)	Nitrate; (mg/L)	Nitrite; (mg/L)	Nitrate; (mg/L)	Nitrite; (mg/L)	Nitrate	Nitrite	Nitrate	Nitrite
Area 1	30.5	0.02	31.45	0.02	31.63	0.015	32.2	0.017	32.2	0.013	31.738	0.0166	0.74405	0.0045
Area 2	22.7	0.026	23	0.01	22.86	0.014	22.86	0.016	24.4	0.022	23.033		0.59582