Liquid reservoir system

A liquid reservoir system comprising:

• a) a liquid reservoir comprising:
• i) a flexible pouch configured to contain a consumable liquid, said flexible pouch comprising:
• a first panel and a second panel sealed together around a perimeter to form a seal;
• a spout end;
• a gusseted end opposite the spout end and comprising a gusset panel extending between the first panel and second panel to enable the flexible pouch to stand upright on the gusseted end;
• a long side extending from the spout end to the gusseted end;
• a short side extending from the spout end to the gusseted end opposite the long side;
• a spout extension extending from the spout end to the short side at a funnel angle that is between 110 degrees and 150 degrees;
• and
• a hanger aperture configured between the long side and the gusseted end;
• and
• ii) a spout integrated with said flexible pouch, and coupled along the spout extension, said spout configured for dispensing said consumable liquid from the flexible pouch
• iii) a fill line extending from the long side toward the short side and proximal to the gusseted side to indicate a maximum fill volume of said liquid when the flexible pouch is configured vertically from the hanger aperture;
• and
• iv) a fill line extending from the spout end toward the gusseted end and proximal to the long side to indicate a maximum fill volume of said liquid when the flexible pouch is configured horizontally from the hanger aperture, and wherein each of said fill lines indicate a fill volume of the flexible pouch with a freeze expansion volume remaining between 9% and 15% volume.