Aqua Cura

 is a fake version of Aqua Pura produced by the ghoul Griffon by switching Aqua Pura with irradiated water to increase his profits. He would then sell the Aqua Pura to people the brotherhood wouldn't give it to.(Like the ghouls in Underworld)

Location

 * Several are found in boxes on/next[right of the table] to the table next to Griffon,(Table also includes a cash register with 21 caps)
 * Can be bought from Griffon(which costs 10 caps)
 * 30 can be found in Griffon's bottling operation (which is in the Museum Authority Building)