In the Nigerian cities of Lagos and Benin City, the 2006 census reported that just 26% and 5% of households had access to treated piped water respectively, with a significant informal water delivery sector working alongside, or in place of, public utilities, community wells, or private bore-holes. The resulting complexity, irregularity, and unaccountability of water supply has a significant impact on women in particular, as they are usually responsible for sourcing and buying water on a daily basis (a task that can take hours each day).