ᐅ Closing the drain and access shaft in the basement?

Hello,

We have an inspection shaft and a small drain shaft in the basement:

The small shaft connects to the main drainage pipe, which runs through the larger inspection shaft. Additionally, the rainwater downpipe under the basement also drains into the main drainage pipe.

Recently, after heavy rain, a small puddle of water appeared in the basement. It probably came from the main inspection shaft due to groundwater pressure.

Since the shafts can smell quite strongly depending on the weather, and we even found a small dead mouse in the large shaft once, I would like to close the shafts.

Our plumber suggested simply filling them with water-resistant concrete.

What do you think?
Do you have any other ideas?

The house was built in 1968. The pipes and shafts are original from that time.

Thanks & best regards,
Peter

There seems to be water inside more often, doesn’t there?

ypg schrieb:
It looks like water often collects inside there, doesn’t it?

No, it doesn’t, but it was built in 1965 😉