Terms for subject General containing fresh supply of

English	Russian
fresh supply of	кладезь (AFFRO)
supply of fresh water	источник пресной воды ("The largest supply of fresh water in the world, five lakes that supply drinking water to 35 million people, is a soup of chemicals, waste, zebra mussels, fish-killing lamprey, bizarre Asian carp and drugs, including anti-depressants." (Vancouver Sun) ART Vancouver)