Comparative Assessment of Well and Borehole Water Quality Index in Sokoto Metropolis

Abstract

The study focuses on the comparative assessment on the levels of some
physiochemical parameters of well and borehole water collected from five
locations in Sokoto metropolis to ascertain their quality index. Samples were
collected randomly and analyzed using standard method of analysis. The
physiochemical parameters analyzed include; pH, Turbidity, Total Dissolved
Solids (TDS), Calcium (Ca2+), Magnesium (Mg2+), Chlorides (Cl-
), Fluorides
(F-
) Sulphates (SO4
2+) and Nitrate (NO3
-
). The result of the study was
subjected to Descriptive statistics and water quality index. The descriptive
statistics results revealed that physicochemical parameters like pH, TDS,
SO4
2-
, and turbidity are within the WHO limit of drinking water while
parameters like Ca2+, Mg2+ and Cl- were within and not within the WHO limit
in some sampling locations whereas parameters like F- and NO3
- were found
not within the WHO limit in all the sampling locations. The result shows that
both water sources were found within excellent and very good water quality
index respectively which indicates that both water sources (well and
borehole water) consumed within Sokoto metropolis are safe and suitable
for drinking as it meets the minimum requirements of WHO standard of
drinking water quality.