We have compared energy bills before. I don't think we have done water usage before.
These are my numbers and relevant information.
Usage
2nd half 2020 - 190l per day
1st half 2021 - 260l per day
Normal mains supply.
Water meter installed.
200sqm property occupied by one person.
Use water butts for much gardening water, but also hose.
Location: Midlands
I think that difference is mainly using the hose for watering the garden, and leaving the hose on by mistake, which suggests that a more organised tank/pumped garden system is the main opportunity for me to reduce usage, plus some sort of hose time or hose max-time-on switcher-offer.