**2. Method and materials**

#### **2.1 Study area**

The study area is Jalingo metropolis in Taraba state located at latitude 80 47<sup>0</sup> to 90 01<sup>0</sup> N of the equator and longitude 11<sup>0</sup> 09<sup>0</sup> to 11<sup>0</sup> 30<sup>0</sup> E of the Greenwich Meridian (**Figure 1**). It is situated within the Northern Guinea Savannah ecological zone. It is bounded to the North by Lau LGA, to the East by Yorro LGA, to the South and West by Ardo-Kola LGA. Jalingo has a total land area of about 195.071km<sup>2</sup> . Nine of the ten (10) wards are located within the metropolis. These include Barade, Kona, Maji Dadi, Sarkin Dawaki, Sintali A, Sintali B, Turaki A, Turaki B and Kachalla Sembe wards [15]. Presently, Jalingo has a projected population [16] of 191,443 people at 2.83% annual growth rate [17] (**Figure 2**).

The WHO standards follow these classifications also (**Table 1**).

#### **2.2 Research design**

The study adopted the experimental research design. This involves studying phenomenon in a laboratory or natural setting, and hypotheses are amenable to statistical testing because it is possible to observe and measure variables in the investigation.

*Analysis of Ground Water from Selected Sources in Jalingo Metropolis, Nigeria DOI: http://dx.doi.org/10.5772/intechopen.99082*

**Figure 1.** *Map of Taraba showing study area.*
