For individual or small-pack needs, consumer-facing retailers offer various styles, including rectangular "space-saver" designs and traditional round jugs.
: Offers a wide variety of empty gallon jugs, including multi-packs of HDPE containers with airtight lids. You can find options like Stock Your Home Wide Mouth Gallon Jugs for around $18.99 per 2-pack.
: Provides options for gallon jugs in glass and stainless steel, as well as leakproof plastic varieties.