tax payers finance about of total water expenditure given the strong increases in federal budget for water supply and sanitation programmes the federal government is currently financing close to of all water expenditures that are currently tracked state and municipal governments represent an additional of water expenditures water users finance over of total water expenditures through water and sanitation tariffs mxn billion from households commercial and industrial users water resources charges mxn billion mostly industrial users bulk water tariffs mxn billion mostly from urban water users and investments operation and maintenance of irrigation infrastructure mxn billion from agricultural users