Purified water (Fallout 4)

Purified water is a consumable item in Fallout 4.

Background
Before the Great War, the MacDougal-Bernard Co. purified and bottled this water, intended to be used in an emergency, for the federal government and its assets, especially the military.

Characteristics
A can of water, which has been cleansed of radiation. It restores 40 health.

Production
Purified water is produced at any populated settlements under the player character's control that is equipped with water pumps or water purifiers.
 * Purified water is added to the workshop inventory when the settlement update timer activates every 24 in-game hours (8 real minutes, if the player doesn't accelerate the passage of in-game time by sleeping). Entering workshop mode at a settlement pauses the update timer for that settlement, while in-game time continues to pass, so the exact time of the update tends to shift at settlements that undergo construction.
 * The settlement timer also controls when drinkable items are consumed from the workshop at the settlement, at a rate of 1 per human population. This consumption takes place before the purified water is deposited at some settlements, and after deposit at others. Drinkable items stored in containers other than the workshop will not be consumed.
 * Purified water will not be added to the workshop if more than 5 drinkable items (including dirty water and alcoholic beverages) are present. This cap increases by 1 for every four population. Regular collection of excess purified water is therefore necessary to continue production.
 * Purified water can be farmed as a greater source of caps, due to its unlimited supply.

Survival mode
In Survival mode, purified water can be drunk to reduce the Sole Survivor's thirst.

Additionally purified water can be generated by using the "Fill Bottle" option when they are next to a water pump or water fountain and they have empty bottles in their inventory. The empty glass containers that can be used are all variants of empty bottles.

Locations

 * If the player character has Codsworth as a companion, he will give one daily if spoken to.
 * One can be found on the bed and shelf in Sanctuary Hills' root cellar.
 * Four cans may be found at the base of the Concord water tower, southwest of the Red Rocket truck stop.
 * Two cans can be found inside the marked toilet in the Fort Strong armory bathroom.
 * Two cans can be found inside the Castle armory after completing the quest Old Guns.
 * Three cans can be found in Barney Rook's basement bunker in Salem.
 * Four can be found at the water filtration caps stash located due east of Sanctuary Hills.

Behind the scenes
It is based on real cans of emergency drinking water bottled by the MacDonald and Bernier company located in Boston and issued by the federal government in 1953.