Water Locations:
(also check out Olwydd's site, water locations)

The syntax for filling an item from a fresh water source is:
fill my <container> with water from <source>
or in some cases, simply
fill my <container> with water

• Water from the alchemist shops, and most store bought 'some water' will work.

• Water from most swimming locations will also work.  If you leave an area wet (ie. you get the messaging as you dry off), that water can be filled into a container for mixing.  For instance, Crossing goblin brook, Shard fallow field inlet, Riverhaven west gate streams, etc.  Often, not every room in these areas will give you water though, so move around until you find a spot.

• Many thanks to the following people for addtions to the list:
  Shinumo

• Water from things like pools, fountains, etc.  I have listed ones I have come across below: