I have a small three family ranch. My tenant called the gas company saying he smelt gas. They came and put a sniffer under the crawl space behind the stove. They then did a test on the meter and said it failed. They closed the gas off and said there was a leak on the main pipe. The next day I got a call from my tenant in 3rd apartment saying he had no hot water. It appears his hot water heater is tied to the 1st apartments line, I checked under the crawl space. I thought that in order to do a test on the meter, all the appliances had to be turned off. I was hoping that the test the gas company did on the 1st apartment meter was not correct because the hotwater heater in the 3rd apartment was running. Would this be true? What should I do? Thank You.