Hence, public authorities in Lagos

Hence, public authorities in Lagos have had to source for water from neighboring states. In 1910, Lagos installed its first water treatment plant in Iju village, Ogun state with subsequent expansions almost every decade due to consequent rise in population.
In a 1985 study, it was discovered that only 47% of the people living in the metropolis were served with portable water at reduced level of service.
This figure has since reduced.