I'm not sure I got the joke about bleach not being effective against anything except HIV - or at least I hope it was a joke, and nobody took it seriously.
Bleach (chlorine and its derivatives) are very effective and generally quite safe. It is however quite corrosive and irritating in higher doses, and the chlorine will evaporate. (Don't use it to clean fiberglass
stains.) My concern is that if there is much organic matter in the water, chlorocarbons will be produced and they are carcinogenic. On a small scale we often overdo the dose, since we can't measure accurately.
UV might be a feasible alternative, but I use an ozone generator
. It is far less irritating than chlorine, and evaporates more quickly. Besides working faster an better(?) than chlorine, it is also very effective at getting rid of smells and tastes. However, it does not leave any residual protection. Water from one marina in Panama
tested safe, but tasted swampy. The ozone got rid of the taste. It also aggregates small particles so that they can be easily be removed by a normal filter.
I had an ozone generator
in a hot tub for may years, and the improvement in water quality was amazing.
It can also be used to kill mold
, but beware that it can be irritating to breathe and may harm some plastics, with prolonged high exposure.
I have a watermaker
, and a large rain catchment awning, so have never taken aboard questionable water.
I was not able to determine an appropriate dose of ozone for drinking water, but it is hard to overdo. It takes very little electricity, and I bubble ozone into each 100 gallon water tank every week or two for an hour. I use a fine bubbler like for aerating a fish
Please be skeptical regarding the health
fadists about their medicinal claims about ozone.
Regarding the yellow water. Was the water tank a hot water tank? I found leak in mine, and yellow water.