> Two technologies come to mind for water protection, heat and  carbon
> filtration.

imho replace heat with a 500W hard UV on-demand source and a suitable
slow-flow exposure unit (this requires a clean-water accumulator after
it). Heat does not really kill critters afaik. In warm countries you have
all sorts of interesting algae growing inside hot water pipes (which do
not go beyond 75C - the upper limit for hot tap water outside a lab). The
UV kills them very dead and also destroys many virii afaik but do not take
my word for it, check. So UV + sub-micron (actually 5 um is common I
think) carbon filter changed monthly sounds pretty good. In fact someone
makes exactly such a unit but I do not remember the make.

The hard UV will destroy all organic compunds and organisms if the
exposure is sufficient. Also many molecules will be split, among
them plastic, so the unit must be made of something else.

Peter

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