Table 6: Concentration range of selected physicochemical properties of this study area with borehole data from other coastal areas in Lagos.

Study area

pH

Ec(µS/cm)

Sal(‰)

NO3-(mg/l)

SO42-(mg/l)

This study

7.63-7.94

2546-3072

13.99-21.18

3-7

55-101

Apapa-Ikoyi-VI

6.8-8.6

112-3387

-

1.4-73.6

-

CMS-V.I

6.38-6.63

1520-1565

-

-

42.1-63.4

University of Lagos

4.27-7.08

37-630

-

1.41- 6.36

Oct-34

Badagry

5-12.28

13-1140

-

-

-