Abstract: Assessment of public water supply quality and people’s perception of water supply services rendered by the Ogun State Water Corporation. The study aims at determining the concentration of physico–chemical and trace metal parameters present in the water been supplied. Thirty (30) water samples were collected with a sterilized bottle from borehole taps and were labelled according to sampling location. The chemical parameters analysed are Hydrogen ion Concentrate (pH), temperature, conductivity (EC), total dissolved solids (TDS), total alkalinity, total hardness and major cations which includes sodium (Na), calcium (Ca), magnesium (Mg) and potassium (K) as well as major anions comprising of bicarbonate (HCO3), chloride (Cl), sulphate (SO4) and nitrate (NO3) and were later taking to the Laboratory for chemical tests. The spatial locations of each sampled point were determined with the use of handheld GPS and further analysis was carried out to derived the location map.