Customers meter was spinning whenever I arrived. Emergency shut off and p r v are in a box in front of the meter. I went through the house to isolate everything to see if anything slowed down, they do have a toilet that is running.But is now shut off. This did not completely get rid of the leak.However, and in the box with the p r v and emergency shut off, there was a leak. Customer agreed for us to replace the emergency.Shut off the p r v and repair the leak. Removed all three items and replaced with a watts.A u b on pex. Afterwards slowly turn the water back on and tested for leaks.There is still a very slow leak somewhere else. I have talked to the customer about leak. Detection. They have not decided to move forward with anything as of yet. Thank you for choosing and trusting t e with your plumbing needs