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 United States government and its assets, especially the military.

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

Production
Purified water is produced at any populated settlements allied with the player that are 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 (72 real minutes, if the player character 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 great source of caps, due to its unlimited supply.

Survival mode
In Survival mode, purified water satisfies the Sole Survivor's thirst.

Additionally, purified water can be generated by using the "Fill Bottle" option when next to a water pump, water fountain or sink if there are empty bottles in the player character's inventory. All variants of empty bottles can be used for this purpose.

Locations

 * Sold by vendors and found as random loot.
 * If the player character has Codsworth as a companion, he will give one daily if spoken to.
 * 15 bottles in Vault 95.
 * 12 inside the USS Constitution.
 * Eight in Doctor Sun's house.
 * Seven in Sheng Kawolski's house.
 * Four cans may be found at the base of the Concord water tower, southwest of the Red Rocket truck stop.
 * Four can be found at the water filtration caps stash located due east of Sanctuary Hills.
 * Three cans can be found in Barney Rook's basement bunker in Salem.
 * 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.

Behind the scenes
The appearance of the can and the name of the company are based on real-world cans of emergency drinking water, bottled in 1953 by the MacDonald-Bernier company in Boston, on behalf of the United States government.