Your leak test only identified a very minimal leak.
What you need to do is to measure YOUR own usage!
Take readings before and after you have showers, use washing machine etc.
Keep the stopcock turned off unless you are actually using water.
Then you can extrapolate the monthly consumption based on your measured usage.
What you do not seem to have done is to take meter readings when you are out and with the stopcock left on.
Tony
What you need to do is to measure YOUR own usage!
Take readings before and after you have showers, use washing machine etc.
Keep the stopcock turned off unless you are actually using water.
Then you can extrapolate the monthly consumption based on your measured usage.
What you do not seem to have done is to take meter readings when you are out and with the stopcock left on.
Tony