The guarantee fee is also expected to provide incentives for reporting water use, and to generate better data on water use. Between August and December 2011, the guarantee fee generated MXN 12 million. For irrigation districts, the prioritisation of water-saving projects gives up to 30 points (out of 100) for water user associations that renounce in their concession title to a percentage of saved water equal to the project’s federal support. For irrigation units in over-exploited aquifers, there is a prerequisite to commit to leave in the aquifer 50% of saved water, and the prioritisation of projects includes a similar clause to that for irrigation districts.