Do you have a pressure relief valve? I rented a house a few years ago and thought that I heard water flowing in the walls even when nothing was drawing water, but I never saw evidence of a leak. My water bill mysteriously tripled one month and I had a plumber come out to take a look. The pressure relief valve in my crawlspace was stuck open due to debris and I had been making a huge mud-pit under the house. I was told this was not uncommon. They replaced the valve and everything was fine from then on.
Hundred or Hundreds.
Assuming old toilet with 5 gallon tank, you could conceivably shoot a hundred gallons of water down the drain in a day, BUT you would have to hear the toilet leaking like that, they dont fill in absolute silence.
I mean it would be constantly filling water, unless you have several toilets all leaking together for a combined rate.
If that is Hundreds as in plural, 200 300 gallons a day, that is a very very large leak.
I do not think you can leak 200 300 gallons of water per day with no sign of it at all.
Anything inside the house leaking that much is going to make noise.
Since your meter is at the street, i would have the meter guy come back out, and watch the meter while you turn off the main valve inside the house.
See if the meter keeps surging.
If it does, you have a yard leak and i have no idea why you dont have a big wet swampy spot that you can see.
Fixing it does not have to be a terrible ordeal.
Rent a trencher and retrench it yourself, and rerun it with schedule 40 PVC.
You could probably do the entire run except the connection to the house and street main, that you could have the plumber do the final connection.
This assuming you dont have a main that runs 30 feet under a slab?
Now if you turn off the house main and the leaking stops, you got something going on inside that you are missing.
How is your house designed? Is it on a slab or raised foundation or a basement?
Basement or raised foundation you should be able to see or hear anything that could leak that much.
Leak under slab depends on how far under the slab it travels before entering inside the house, and if your internal piping also runs under the slab.
Do you have a cat?
I’m in northern Ohio and quite a few people have their meters in BVs (brick vaults). Mine has never frozen and it has hit -20 at least once, and below zero for several days on end. They are closed with an iron manhole cover, that’s it. I guess if the water never flowed it would be a problem. The BVs are about 4 to 5 feet deep, well below the frost line.
Dennis
How does your water company read your meter? Does you water bill have a meter reading on it? If there is a meter reading on your bill then go to your meter and read it and compare the reading to your bill.
Any one who gets a water bill that does have a meter reading on it should read their meter themselves at least once a year.
With some of the meters out there they are recorded electronically and the bill may not have any meter reading on it.
If you take daily meter readings then you can determine your daily use to compare to your bills daily use.
Now to the problem. Turn the water where it enters the house. Then check your meter. If it is still turning then there is probably a leak between the meter and the house. And depending on your soil a leak does not always show on the surface.
Turn the water off at the toilets, all of them does the meter stop? If do then one of your toilets is at fault. Turn on one toilet, check, then turn off. Check each toilet.
Other possible leak water heater PT relief valve, irrigation water system with auto valves, ice maker?