There was a time not so long ago when we galls were taught to not take
hot water out of the tap to use for cooking. The reasoning behind it
was the possibility of poisoning the family with lead. The experts
thought that hot water would remove some of the lead in the joining
compound and it would be in the water which we cook in. For this reason
I always let my hot water run for a min before using it or I just use
cold. Times have changed tho and most all joining compound used for
interior pipes are lead free and these days a lot of homes are built
with pcv pipes. Water tanks have also come a long ways and many of the
old ones which my friend Red spoke of have gone by way of the dinosaur.

Good tip tho when using hot water is to let it run a min before mixing
with the cold and toping off the tank.

Vicki

Often, hot water heaters have more metals in them and some of them can,
not always, but can get into the water... I've only heard of iron(which
may or may not be bad) can come in the water from the hot water
heater... but I was told that by a reefer, so whether it has any bearing
on FW tanks, I can't say...
Calcium can be another story in and of itself....

Visit me on line at http://shamrock4u.250free.com