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 of the population has access to drinking water services and has sanitation coverage considering the current coverage and future population growth projections in the next years mexico will need to provide an additional million inhabitants with drinking water services and million with sanitation services