Name Location County Country Power source Type Function River
Piccott's End Mill Hemel Hempstead Hertfordshire England Water Watermill Corn mill Gade
Hunton Bridge Mill Hunton Bridge Hertfordshire England Water Watermill Corn mill Gade
Grove Mill Watford Hertfordshire England Water Watermill Corn mill Gade
Old Mill Watford Hertfordshire England Water Watermill Pumping mill/wheel Gade
Apsley Mill, Apsley Apsley Hertfordshire England Water Watermill Paper mill Gade
Kings Langley Mill Kings Langley Hertfordshire England Electricity, Steam, Water Roller flour mill, Watermill Corn mill Gade