Meters vary in design, so there is no one answer to this. I once had a slow leak, too. I figured out the volume by watching and timing the little indicator in the middle as it slowly revolved. The dial on my meter was calibrated in hundredths of a cubic foot. I noted the location of the hand on the face of the meter, and then I timed one complete revolution of the leak indicator. Next I checked to see how much the hand had moved. I think when I had the problem, one revolution of the leak detector took about 6 minutes and had advanced the hand on the dial by 1/100 of a cubic foot, so I knew I was losing that amount ten times over an hour. All told I was losing about 2.4 cubic feet a day. Your meter may be different from mine, but you can calculate your loss the same way by figuring out the relation between one rotation of the leak detector and how much flow that registers on your meter, and timing the rotation.

The leak detector is very sensitive, so a slow spin can indicate a quite modest loss. Once, when I was selling a house, a realtor claimed I had a water leak somewhere. When I investigated, the indicator was spinning around, but the leak I finally found was an outside spigot that was simply going drip-drip-drip and the spinning stopped when I tweaked the spigot handle.

Toilets are notorious for slow leaks that are hard to catch. Have you done the food coloring in the tank test?

When I am curious about water usage, I take readings or cell phone picture of the meter dial at night and then the following morning and evening.

Stax, lets see:

- I asked a specific question.

- I commented on a question asked.

- You then just roll in and start demanding.

NOPE, you can just toodle along and find someone else to harass, and leave me and other posters alone, dude.

Dear Annoying Responder,

I did, I will, they helped, you didn’t, I didn’t ask for any additional info, I simply answered a question. Good day.

"Dude?" Now that is almost as bad as being called a "Texan". lol