Is the drainage water flowing back?

[larsakeni]

A few years ago, we re-did the drainage around the house and installed a Platon mat on the foundation! A drainage well was installed with a pump that pumps the drainage water to the nearby old stormwater well! The pump runs for about 10 seconds 2 times per minute! Sounds like a lot, but everything has worked well so far. However, when I went to clean the drainage well, I discovered that after each pump cycle, quite a bit of water comes back via one of the drainage pipes! Could there be some kind of connection from the old stormwater well to the drainage pipe that they missed when they redid the drainage around the house?

What can be done?
Best regards,
Lars

 

[växelventil]

About 10 years ago, I had the house drained and put a platon membrane on the basement walls! A drainage well with a pump that pumps the drainage water to a nearby old stormwater well was installed!
After all the heavy rain this summer, the pump has stopped several times and the well has filled up!
I have now discovered that after each time the pump runs, a lot comes back from one of the drainage pipes into the drainage well!

Could it be that there is some sort of connection from the stormwater well down to the drainage pipe that the company that did the job hasn't sealed?
That would also mean that when it rains a lot, a portion from the stormwater well flows into the drainage? And that's why the pump can't keep up and stops?
What can be done about it?

All tips are welcome!

Sincerely,
Lars

When you say drainage pump, do you mean pump well? I don’t know if yours has a check valve; otherwise, if there’s a risk of freezing, one usually orders a pump without a check valve. Otherwise, it seems strange that it stops due to too much water, as it should be able to handle that. Do you know if you can lift the pump from the well?

 

[larsakeni]

When you say drainage pump, do you mean sump pump? I don't know if the one you have has a check valve; otherwise, if there's a risk of freezing, you would typically order a pump without a check valve. Otherwise, it seems strange that it stops due to too much water as it should handle that. Do you know if you can pull the pump out of the well?

I have taken the pump up a few times over the years and cleaned the well as they said to do! I mean sump pump which is connected to the drainage pipes! One comes from each direction! In the sump, the pump is placed which transfers the water to the nearby stormwater well, and every time it pumps, more water comes from one of the drainage pipes into the sump!

 

[växelventil]

Have had the pump up a few times over the years and cleaned the well as they said I should! I mean the pump well that the drainage pipes are connected to! One comes from each direction! In the pump well sits the pump that pumps the water over to the nearby stormwater well and each time it pumps, more water comes from one of the drainage pipes down in the pump well!

It sounds tricky. The question is whether the problem lies in the pump itself and it's not able to pump as well anymore because it's starting to wear out, and the issue has arisen now but previously it worked fine and you didn’t notice anything before.

 

[larsakeni]

It sounds tricky. The question is whether the problem lies in the pump itself and if it's struggling to pump due to wear, which might have caused the problem now, even though it worked well before and you didn't notice anything earlier.

I guess I have to admit that I thought the pump ran very often compared to my neighbors who have similar systems! I have replaced the pump that broke once, but the old one ran just as often as this one! Since the water I'm referring to comes from the drainage pipe down in the well, it can't be the pump's fault, can it?

 

[växelventil]

I must admit that I thought the pump was running very often compared to the neighbors who have similar systems! I have replaced the pump that broke once, but the old one ran just as often as this one! Since the water I'm referring to comes from the drainage pipe down in the well, it can't be due to the pump, right?

Yes, many starts and stops wear on the pump. Has it rained more than usual down there? That could be why the system isn't keeping up properly; otherwise, I don't know what else it could be.

 

[Claes Sörmland]

In the pump well is the pump that pumps the water to a nearby stormwater well, and every time it pumps, more water comes from one of the drainage pipes down in the pump well!

It may mean that one of the drainage pipes is connected to a larger underground water reservoir than the other, i.e., a more water-filled gravel trench that the drainage line lies in.

But it may also mean that the stormwater well you are pumping to has an outgoing line that leaks water back to the drainage line's gravel trench. Maybe the outgoing line is an old cracked concrete pipe thing?

 

[Kriss Marc]

It looks like the bend to the outlet is higher than the dishwasher hose.
Arrange so that the dishwasher hose becomes higher and the outlet becomes lower (the other bend is removed, and only 90° into the wall is used)