"Stormin' Norman" wrote in message
...
On Sat, 10 Dec 2016 08:06:23 -0500, slate_leeper
wrote:

I wrote a while back about an underground water leak. Well, I have
determined that the water leak is not in the feed line but is within
the structure. I was misled by a main shutoff valve that didn't fully
shut off.

So, back to the problem. I am using 120 gallons a day (5 gallons per
hour) in a house that is unoccupied. I have inspected everywhere.
There are no dripping faucets. All toilets have been shut off. There
is no visible moisture anywhere. This is a 70's "raised ranch" style
house with no crawl space. Once the water main enters from the street,
all piping is within the structure.

So where the heck is it leaking?



Is the house built on a slab? Do you know if the water pipes were
plumbed in the slab? If the pipes are in the slab, the acidic nature
of the concrete can deteriorate the copper over time.

Acidic concrete? Not in my world