Originally Posted by dlymn
"I like that idea, but in real situation I would be concerned with micro organisms from the two different eco-systems."
I reckon that the ball valves with their nylon seals
ensure no seepage into the freshwater tank from the sea but as well, we chlorinate the fresh water
. The sea water source is a last resort if you need to minimise water usage and is not necessary,
Sounds like you want the handpump to be used with either fresh or salt water
...............never seen that done.
Most people only use seawater for washing
dishes, then rinsing with fresh, thus saving the fresh water.
In any case, you should always run your water before using, especially if it has been sitting for a while and you are not on the boat using the water system every day.
If you are concerned with "things in the water" follow the prescribed and widely published methods for purifiying water..............best advise stop listening to all the media's and ad hypes/crap on "killlng all those bad germs".
Choose your water sources, flush the fill lines before filling tanks
and if like myself a "weekender" on my boat, is use the water so you can continue to introduce into your tanks
, 'fresh' water.