ᐅ Combine cistern and rainwater inspection chamber?

Good evening,

according to the zoning plan, a cistern must be built on the property. The drainage is carried out via a separate system.

So, two manholes and a cistern are required. From a technical point of view, is it possible to combine the rainwater inspection chamber and the cistern into a single structure to save some effort, or can I skip calling the authorities?

Thank you

So-called infiltration cisterns "3 in 1" do exist, just googled it.

No need for infiltration...

Seb_Opf schrieb:

No need for infiltration...

Signs signs

Check with your local authority if it’s allowed; it could save you money. Otherwise, the overflow from the cistern goes into the municipal drainage system, right? Where I am, it’s common to have to insure it yourself. But there are no fees for that. I think I have about 500m2 (5400 sq ft) of impermeable surface, just the house, garage, and driveway. If you have to arrange disposal, it would probably be quite expensive.

Seb_Opf schrieb:

or can I just skip calling the administration?

If you call or inquire, the administration is required to respond or decide according to the legal situation.
Questions that are not asked do not have to be negatively decided.

Nida35a schrieb:

If you call or inquire, the administration must respond or decide according to the legal situation.
Questions that are not asked do not have to be decided negatively.

Yes, but if you have to pay for stormwater anyway, making a call can also have a positive effect.