I have an underground box about one foot long by maybe 8 inches wide or so. It's buried in the grass by the street. It appears to contain the water shut-off valve for the house. I'm assuming it's related to the main water line and not the lawn irrigation...
The box has been filled with water for at least several months now, but our water bill doesn't seem to be much, if any, higher than in the past. However, I'm not sure how long water has been filling the box as I only looked in there for the first time a few months back.
How can I determine where the water is leaking? I scooped all the water out, and I didn't see any big gush of water. I'm guessing it's a slow leak but from where?
Do I need to call some plumbing repair services or a handyman?