How much does it cost to use sprinkler?

[MeMeMeow85]

Does anyone know how much it costs to run the hose/sprinkler for an hour?

We’re on a water meter (Thames Water). Currently living in a rented house. Fairly large garden. I don’t want to spend lots of money keeping someone else’s garden going during this heatwave, so wondered how much it costs when I use the sprinkler for an hour each evening.

Any thoughts please?

Curious as Id wondered about trying to resurrect my grass!

But an hour!?!? I was thinking of leaving it on for 15mins.... (I know nothing though.!)

the grass will recover just fine on its own when the rain comes
do not waste money and water on it