Your water pressure is low and there's a soggy spot in your lawn surrounded by dry ground. It's probably a break in the pipe itself. If this is the case, thank for calling because it's the easiest kind of break to fix and honestly kind of a relief. Often customers will call and ask how much the total will be for their specific job and all we can do is give an hourly rate and say "Even with our best professional guess, sometimes we don't know for sure what we're dealing with until we start digging."

And in this example all we have to do is expose the pipe and glue some fittings. Maybe an hours worth of work.