Customer has had multiple elevated water bills.Ranging upwards of seven hundred dollars last month. Evaluated what the issue was by starting off.Where the water can be turned off, which is in a crawl space and then checking every toilet within the home which there are nine. The toilets were all kohler. And most of them had the original builds on the inside of the tank. Several of them could be heard running intermittently. I checked the pressure on the house which ranged between a hundred and ten and a hundred and twenty p s I. There was no water service line leak that I could detect with the water off and hovering over the water meter. Customer agreed to have their pressure regulating valve replaced, which was a one inch watts, twenty five a u b. And to have all nine toilets rebuilt with a new flush, seal, fill valve and supply line. I started by isolating the old p.R v and replacing with a new one inch p r v I then slowly repressurized and cleared the line of any air by turning on th