The contracts also foresaw that by the 2008, the tenth contract year, drinking water quality standards had to be met and that water supply had to be continuous at a pressure of 7.5 meters water column.
Kontrak ini juga menetapkan bahwa per 2008, tahun kontrak kesepuluh, standar kualitas air minum dapat dipenuhi dan pasokan air tidak berhenti dengan tekanan kolom air 7,5 meter.