The city has been out, looked at their side, and maintain that the soggy ground near my back fence is due to a leaking pipe between my house and their valve. Guess I'll be doin' some digging, any tips would help. My experience level with this is very low to none.

I sent this message earlier but got an error message, so please disregard this repeat if the first one ever shows up... I have 2 upstairs full bathrooms. One bathroom has fine water pressure, but the other has recently lost pressure in the shower and commode. The sink seems OK to me. There has been no new construction to have caused this. The affected shower is a single-handle Delta (no tub). I've removed the shower head, and the water flow out the pipe is lower than the shower in the other bathroom. I didn't think the shower valve was the cause since the commode is also affected, so I haven't dismantled the valve yet. I have city (soft) water. Any thoughts? If I have a supply line partially blocked, how can this be cleared without tearing into my walls? Thanks much.