william, good question. not much chlorine bleach (generic w/o scents and
crap) is needed. I would suspect a cap full would be sufficient. THEN
after it has sat for a few minutes (and you ran it through the faucte a
few times too), drain the bleach solution rinse and flush with tap water.
After majority of the chlorine is gone (after one or 2 rinses) add some
hydrogen peroxide (available where you get your bandaids and rubbing
alcohol) to react out the chlorine that is left. Then rinse a few more
time and you are set to go. I use this method to clean out water bottles
that i bring on multiday mountainnering trips. It  is also a safe and
cheap way to purify water of giardia, but don't trust me on that last
account. i don't want to be blamed  for your missery....

btw, you could also add a tad of chlorine bleach to the water and not
even worry about rinsing it and just drink it..B.

cheers
mattew

Matthew Pollard          "Racing with the wind and flirting with death
Dept. Of Chemistry        So have a cup of coffee and catch your breath"
University of Idaho
www.uidaho.edu/~poll7356