I have a problem with water flowing out in several places slowly, so that in the sinks affected it flows out slowly (slow enough that the running water fills up the sink more and more).
I checked a few of the siphons/traps and they are not clogged. I've also put a snake down down the kitchen pipe to check for problems around the next corners, but it came back clean (length about 5m).
The problem occurs in all of the sinks (bathroom, toilet and kitchen) downstairs, but the toilets themselves as well as the showers seem unaffected, as are the upstairs sinks, which baffles me.
What could the problem be and how can I figure out what is going on?
additional information to questions asked:
- House is about 5 years old.
- Has a basement where I unfortunately couldn't find anything (a big pipe coming down, continuing horizontally and outwards, this is most likely the main outgoing, no valves or vents or cleanout that I could find).
- No trees at the house or nearby where the water main runs.
- Building is in continental Europe, cold climate in winter (Austria).
This might be related to my previous issue: Water going out badly from sinks and shower - how to locate the issue?
However, since different items are affected this time (the showers not, but some sinks that were fine before now are backing up) I'm asking a new question as the issues may or may not be related.-