All sorts of nasty stuff gets into our water... hormones from birth control
pills, improperly disposed of medications, etc.... Over time it has to have
an effect.
Jacqui

I wonder if these small carbon water filters take such stuff out or reverse
osmosis filtration? ~ jan
See my ponds thru the seasons and/or my filter design:
http://users.owt.com/jjspond/

~Keep 'em Defrosted~
Tri-Cities, WA Zone 7a
To e-mail see website