|The following is based on Fallout Tactics and some details might contradict canon.|
Around 2198, Red Stingers, a group of criminals from Quincy led by an individual called Guldo Sciavo, poisoned a group of Eastern Brotherhood of Steel paladins and stole their power armors and vehicle and left to Coldwater, when, armed with Brotherhood equipment, it easily took over the control of the town. During this time, the town was inhabited by many citizens and traders, with Guldo's gang being the rulers of it. Among the citizens are Simon Dudley, his sister Adele Dudley, as well as Father Donald, ghouls Jacob and Brad, and Rainman. The local criminal and businessman is Don Vinchenzo.
Eventually a Brotherhood squad led by the warrior defeated the bandits and freed the town, retrieving the three stolen power armors from Guldo and his men. While fighting bandits, the warrior saved Adele Dudley from Jeff Dougal, a member of Guldo's gang, and was asked by Don Vinchenzo to assassinate Ma Baker. However, he probably refused, as Ma Baker was in fact a nickname of a Brotherhood's own paladin, sent into town to find out about raider activity in the region. The three power armors were returned to Auditor General, who awaited the squad near insertion point.
This section is needed but has not been written yet. You can help The Vault by writing it.
The mission in Cold Water is to find and kill three thieves and retrieve the power armor that they each stole.
The town is called both "Coldwater" and "Cold Water" in various places.
Cold Water appears only in Fallout Tactics.