Ancient and Holy Wells of Cornwall
http://www.archive.org/stream/ancientandholyw00cougoog#page/n18/mode/1up
A Church Treasury of Holy and Ancient Wells 1898
http://www.archive.org/stream/churchtreasuryof00andrrich#page/n7/mode/2up
The legendary lore of the holy wells of England : including rivers, lakes, fountains and springs (1893)
http://www.archive.org/stream/legendaryloreofh00hope#page/n5/mode/2up
Folklore of Scottish lochs and springs (1893) by James M MacKinley
http://www.archive.org/stream/cu31924029911140#page/n5/mode/2up
I lived in a farmhouse on the banks of lake Windemere like that. Running water was the damp on the walls though.