<p><span style="font-size:14px"><span style="font-family:Arial,Helvetica,sans-serif">The concentration of cations and anaions in ground water of Bhopal city was studied during March 2008. The concentration of various cations like Sodium (9.7 mg/L to 79 mg/L). Sulphates (12 mg/L to 372 mg/L) and Potassium (5 mg/L to 45 mg/L) was found. At 50% of the location the totalhardness values of ground water exceeded the values prescribed for drinkding water (IS 10500). The concentration of the anions like Fluoride (0.76 mg/L to 1.24 mg/L), total alkalinity (120 mg/L to 360 mg/L) were observed whereas the Nitate (5.2 mg/L to 42 mg/L) Chloride (24 mg/l to 306 mg/L) and Ammonical nitrogen (0.03 mg/L to 0.62 mg/L) were found</span></span></p>