Our garden is across the road and that's where I harvest rainwater. The issue is that I'm running out of rainwater and it hasn't rained.You must be storing harvested rain water so you must have space to add an r/o to the storage tank.
When we first moved into our house we didn't have an outside tap either. I fitted one by taking a supply from the cold water supply to the bath. (We have a dormer with a downstairs bathroom and toilet.) My first r/o was a RoMan 275LPD which was positioned at the back door near the tap. The waste went to the bathroom drain. During the freezing winters the r/o was inside on the kitchen sink. As it used to work all night there was no problem with the membranes freezing up.
Since then I joined a feed from the pipe to the downstairs toilet into the garage which share a wall. The r/o is now in a cabinet on the garage wall inside that is heated by a tube heater which keeps the temperature inside the cabinet at 8 degrees.
There is an example of one of the members on this forum who made a wooden insulated cabinet to fit on an outside wall on his house. Its on YouTube somewhere.
99.9% of outside taps are taken from the supply of cold water in the kitchen. The washing machine will have a supply as will the dishwasher and the cold water tap to the sink.
Grippatank supply a cabinet that I'm sure could also be adapted to fit on an outside wall with an r/o inside. They heat this with a 12 volt system, but I'm sure they will sell you an 'empty' cabinet which you can fir a tube heater and froststat to.
And outside tap isn't an option as it's a listed building.
Thanks for your reply though.[emoji106]
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