The minimum concentration level of iron was found to be 0.02mg/l while 3.51mg/l was the maximum obtained.
Iron concentration in shallow wells was found to be particularly low. The variation in observation was also very
low.
The concentration of chloride in the study ranged from 18mg/l to 230 mg/l with a mean of 70.86mg/l. The
standard deviation of 43.42 is fairly high indicating the dispersion of the observations