We have an issue with our septic pipe I guess or something else. Our septic tank is in the backyard and we had that pumped not to long ago. The problem arises when we shower, run the dishwasher, or washing machine sewer smelling water runs up from the ground in the front yard and down the sidewalk. What can cause this???
Sorry in advance. I just happened by & I haven't seen all the septic designs out there or had a septic system in 20-years. It sounds like a leach field outlet blockage or clog, check the manhole or observation pipe for signs & smells of leakage.
Maybe you have an overflow pipe (which I've never heard of) or much worse, that you're still connected to an old leach field. The only other reason would be an overflow from your surface penetrations in the back yard that are just following the landscape's natural drainage & may only appear to be bubbling up.