The challenges of inadequacies and disparity in quantity of fresh water supply as experience in many regions of the world Altogether, can be attributed to issues such as climate change, rapid population growth, institutional failures and growing water demand., thus resulting in water accessibility issues. While efforts have been made to analyse willingness to buy water or pay for improve water services no single study has pointed to the inequalities associated with informal water market (IWM) in Nigeria. Therefore, this study is an attempt to examine the impact of IWM on access to water in Ijebu-Ode Nigeria. Adopting questionnaire for the survey of 507 and connecting household socio-economic characteristics to household access to water sources. Analytical Method includes in investigating the inequalities associated with informal water market operation. Chi-Square, t-test, ANOVA Also further, inquiry into the associated inequality followed Lorenz Curve and Atkinson Index technique. The findings showed that, Gini index for the study area is 49.45, while that of water expenditure is 49.23 the Atkinson Index remains 0.361, showing existing inequality in access to water. Therefore, recommendations comprise the establishment of regulatory body, provision of loans services for the informal water market sector.