ᐅ Should the electrical wiring and water supply for a cistern be kept separate?

Hello everyone,

I am currently considering the routing of water to and from the cistern, as well as the electrical supply to the cistern pump. For this, I have already connected PVC sewer pipe bends to the Graf flat tank dome. I still have two available and originally planned to separate electricity and water.

Since the distance to the valve box, the potable water refill, and the electrical connection is 12 m (39 feet) using PVC sewer pipes, I am wondering whether a DN110 PVC sewer pipe would be sufficient to accommodate the drinking water line, pressure line, and power cable for the pump all together. Space-wise, this is not an issue. I wanted to keep electricity and water separate, but basically, nothing should happen to an underground cable, right?

Best regards

You can install the drinking water and pressure pipes without using KGrohr pipes. Your supplier does it that way as well.
They are certified to last over 100 years underground…
Also, pulling a PE-HD pipe into a KGrohr can be quite difficult because it is fairly rigid.
I would suggest placing the electrical wiring in a conduit. That way, it remains easy to replace.
In principle, everything could be installed together.
Your irrigation circuits are also installed underground without KGrohr pipes.