This is the list of existing Lancaster County water-powered mills listed by township. The township affiliation is according to the current boundaries. Some of the townships have been renamed and/or realigned since the mills were built.
Adamstown Borough
Brecknock Township
Caernarvon Township
Clay Township
Conestoga Township
Conoy Township
Drumore Township
Earl Township
East Cocalico Township
East Donegal Township
East Drumore Township
East Earl Township
East Hempfield Township
East Lampeter Township
Eden Township
Elizabeth Township
Ephrata Borough
Ephrata Township
Fulton Township
Leacock Township
Little Britain Township
Manheim Township
Manor Township
Martic Township
Mount Joy Township
Paradise Township
Penn Township
Pequea Township
Rapho Township
Salisbury Township
Strasburg Township
Upper Leacock Township
Warwick Township
West Cocalico Township
West Donegal Township
West Earl Township
West Hempfield Township
West Lampeter Township