I urge you to take photographic evidence of the meter as you leave, four feckin years on I am still doing battle with Severn Trent Bastid Water company.
I had an electric Co do something similar, can't remember which one. I actually took a photo of the meter when I left, it was rented accommodation. 6 weeks later, while I was in Newcastle for a week working, I went to pay for a meal at a restaurant & my card was declined, twice. I had to leave my Name & address with the restaurant with a promise to pay the next day when I'd sorted things out.
Checked my bank on-line when I got back to the hotel, to find the Electric Co had cleared my account out, and my £500 overdraft. Stuck 100's of miles from home, no money and no fuel in my car, I had to borrow money from a work colleague just to get home. Took me nearly 6 weeks to sort everything out.
Apparently, the letting agent for the house i was renting submitted a meter reading 'in error' and as they were representatives of the owner, their meter reading took precedence over mine as the outgoing tenant. A timed & dated photo, together with as photo from my mothers boss (a solicitor) sorted it, I got my refund and a whopping £20 compensation payment.
The letting agent also refused me my deposit.
Don't know who owned the house or who the next tenant was, but 5 months after I moved out, I got a visit from the Tax man for unpaid income tax. That was an interesting conversation as I knew the officer, I'd trained him in about 18 months previously.