Dimension Cistern - Building Plan Tips

Hello,

It's even funnier for me. I pay a fee for stormwater that is calculated based on sealed surface area. At the same time, the municipality requires a water meter and fees based on consumption for a cistern, which collects water used to water the garden, because they are missing fresh water in the sewer. I'm missing something there too, namely understanding.

Steven

Ultimately, the infrastructure present in the community must also be paid for by the citizens. One way or another ...

Regarding the well, I’m also thinking about the possible nitrate contamination. For watering the lawn, it doesn’t matter, but for growing vegetables it might be a concern for cautious people.

I’m still interested in how the operator will solve the infiltration ...

BTW, I’ve posted this somewhere here before ... For sizing the cistern, there are calculation guidelines from relevant manufacturers (Graf ...). Input values are: garden size, region/amount and frequency of rainfall. Result: required cistern size.

Regarding the infiltration, I spoke with a friend. He has an overflow. That means when the cistern is full and it continues to rain, the water is directed through a pipe into a two-meter-deep hole filled with gravel. Something like that should also work for us... But as I said, I need to talk to the general contractor about the details. At the moment, we are still very early in the planning phase.

Regarding infiltration, I spoke with a friend. He has an overflow. That means when the cistern is full and it continues to rain, the water is directed via a pipe into a two-meter-deep hole filled with gravel. Something like that should also work for us... But as I said, I need to talk to the general contractor when it comes to details. At the moment we are still very early in the planning.

How did it turn out? We are considering the same option, namely a cistern with infiltration overflow, because otherwise we would have to pay exorbitant stormwater fees (5,000-8,000 € over 20 years, price trend rising).

So we ultimately received a 6,000-liter cistern. The "hole" was generously excavated and filled with gravel around the cistern. In addition, a fleece was placed around it. When the cistern is full, the water flows out of an overflow pipe and seeps into the area around the cistern.

The soakaway must be approved by the municipality. In our case, the municipality wanted three boreholes for a soil survey where the soakaway was to be placed, plus a water infiltration test (how much water infiltrates in what time). It was clearly easier (cheaper) to divert the overflow into the sewer.