Why does the kitchen sink gurgle every time a toilet is flushed or the washer is run? How much will it cost to fix? I have a septic system. - Quora
![bathroom - Bath and sink connected on same pipe - bath gurgling when sink emptied - Home Improvement Stack Exchange bathroom - Bath and sink connected on same pipe - bath gurgling when sink emptied - Home Improvement Stack Exchange](https://i.stack.imgur.com/OlWhD.png)
bathroom - Bath and sink connected on same pipe - bath gurgling when sink emptied - Home Improvement Stack Exchange
![Mud/dirt coming up through bathtub. Bubbling gurgling sound also in toilet/ sink. Only in this guest bathroom, nowhere else in the house. Any suggestions on what could be causing this? : r/Plumbing Mud/dirt coming up through bathtub. Bubbling gurgling sound also in toilet/ sink. Only in this guest bathroom, nowhere else in the house. Any suggestions on what could be causing this? : r/Plumbing](https://preview.redd.it/3wyy0si8xc891.jpg?width=640&crop=smart&auto=webp&s=79c0529d303fd3674cc1d40c37dd102e8cb6d2ad)