The current state of water bodies has adverse effects on the environment (poor water quality, reduced stream flows, drying up of wetlands), adds costs to the provision of water services (as water has to be treated before it can be used), and threatens the economic viability of farming. Currently, 91.3% of the population has access to drinking water services and 89.9% has sanitation coverage. Considering the current coverage and future population growth projections, in the next 20 years Mexico will need to provide an additional 36 million inhabitants with drinking water services and 40 million with sanitation services.