Holy Water

Holy water is an item added to Fallout 3 in the add-on Broken Steel. It is produced by Mother Curie III by irradiating aqua pura.

Obtaining

 * It can be obtained only if the player doesn't choose to drink it but instead either picks the hatch lock or steals Brother Gerard's key to open the hatch.
 * The player can pickpocket Brother Gerard and he will have three or four on him as well as the holy water pamphlet.
 * Two more can be pickpocketed when Rosa gives the holy water bottle to Micky. One can be taken from Rosa and one from the water beggar with no karma effect, but not when he's dead. You have to pickpocket him when they are having their conversation.
 * You can get an infinite amount of holy water when Brother Gerard tells you to drink the water and clean your mouth. Instead of drinking just drop it to the ground and talk to him to get another. This can be repeated as many times as desired.

Behind the Scenes

 * "Mother Curie" may be a reference to Marie Curie, the famous polish scientist who studied radiation and radioactive materials.