Wells are found in almost all villages and towns within the Fabled Realms these are the main source of water for most of the residents of these places. When adventuring it is common for parties to come accross a ruined village with a well still standing, drinking from them though can be a risk as many of them have gone stagnant.
Many stories persist about wells, one of the stories in Sleevigval is that a nearby abbandoned villages well is haunted by a wraith of a young lady, who roams looking for something and attacks lonely travellers. Legends like these often draw followers of the Ninefold Path to try and resolve them, especially their Ascended devotees as it could be signs of a Ghoul or worse a Strygga.