Our house is at the bottom of a slope, and all rain water and irrigation runoff gets collected through a underground pipe which has an opening at street, a few yards away from storm drain.
We recently found a small amount of water constantly yet slowly coming off the pipe and thus get collected on the street. There is water even when sprinkler is off for whole week and no rain. Where can this water come from? We do have a damaged sprinkler for the lawn (riser does not come up, nearby sprinkler heads lose water pressure ). there is no leak according to water leak gauge for the whole house. Can anyone please help diagnose the source for this water?