Does anyone get charged alot for using their water for reach and wash pole system?
If so can a percentage of it get discount from your annual payment from tax ? Our monthly payment to water company local has increased since I started work again in October by £20 per month.
Personally, I think you need to enlist the help of someone who can understand your water setup before you proceed further with this at a water authority level. This can be very complicated.
If you aren't on a water metre, then you can't claim water usage according to the tax man. You are going to pay the same a month for water no matter how much you use or don't use. Don't phone them as they will want to put you on a water meter.
If you are on a water meter then this is another story.
Your water bill has 2 elements, the amount of water you use and a sewage element for processing sewage. You need to speak to your local water authority and ask them if they have a procedure to follow regarding the sewage element of your water bill when using an r/o.
I approached Northumberland Water many years ago and they told me that as I was returning the waste water to the drain, they couldn't give me a rebate on the sewage element of the water I used.
However, if you are on a meter you could put a second water meter on your pipework to your r/o and claim that against tax without involving your local water board. As a simple example, if your house used 20,000 liters a month and your r/o meter showed your r/o used 10,000, then you could claim half your bill against tax. But you will need to keep a detailed record of each claim.
If your waste water from your r/o went to a soak away rather than the drain, then the local water authority may refund the sewage element of the water bill your r/o uses. You will need to give them monthly r/o water meter readings so they can adjust your bill if this is what they agree to.
This sewage element of your water bill is a minefield. After all, if you water your garden, that water isn't going back to the sewer, but you still have to pay the sewage element of your water bill for it. Then the pure you produce is being taken away, so that's not going down the sewage drain either.