Clean water is safe enough to be consumed by humans or used with low risk of immediate or long term harm. The clean water problem is that of quantity (access), quality, cost, and system maintenance.
Universal, equitable access to clean water across urban and rural areas worldwide, supplied by utilities and service providers with adequate capacity to deliver reliable and sustainable service. Clean drinking water allows the poor to lead healthier lives and devote previously lost time to productive activities that improve their livelihoods.