Hello everyone,
We are currently working on building our single-family house. The building application has been submitted, and we promptly received the first letter from the building authority stating:
Rainwater must generally be infiltrated or directed into a nearby open water body, as long as this is possible without excessive effort and damage (§ 48 b Abs. 3 WG-BW).
After a phone consultation with the building authority, we were told that rainwater is not allowed to be discharged into the sewer system due to water protection zone III. The proposed solution (if you can call it that, as they basically said “there’s no way around it”) is a cistern. Permeable paving was also mentioned for the driveway, although we’re not sure what that is for. There is no water body nearby, by the way.
We had actually considered a cistern for watering the garden but excluded it due to the cost. Now we are being forced to install one despite the financial strain, so I have a question for you.
There seem to be countless types of cisterns (according to Google). Can you tell me which type would suit our purpose and where it’s most important not to cut corners?
Kind regards
We are currently working on building our single-family house. The building application has been submitted, and we promptly received the first letter from the building authority stating:
Rainwater must generally be infiltrated or directed into a nearby open water body, as long as this is possible without excessive effort and damage (§ 48 b Abs. 3 WG-BW).
After a phone consultation with the building authority, we were told that rainwater is not allowed to be discharged into the sewer system due to water protection zone III. The proposed solution (if you can call it that, as they basically said “there’s no way around it”) is a cistern. Permeable paving was also mentioned for the driveway, although we’re not sure what that is for. There is no water body nearby, by the way.
We had actually considered a cistern for watering the garden but excluded it due to the cost. Now we are being forced to install one despite the financial strain, so I have a question for you.
There seem to be countless types of cisterns (according to Google). Can you tell me which type would suit our purpose and where it’s most important not to cut corners?
Kind regards
P
Pitiglianio18 Mar 2022 08:13Who is actually responsible for inspecting the proper installation of the surface drainage required in the building application/building permit? I mean, does someone come by to check the size of the cistern, the presence of a soakaway system, or the joint spacing of the permeable paving?
Pitiglianio schrieb:
Who actually checks the proper installation of the surface drainage systems required in the building application/building permit?
I mean, does anyone come by to inspect the size of the cistern, the presence of a soakaway, or the joint spacing of the permeable paving? No one.
Unless you have annoying neighbors or enemies 😀
At least someone from the municipal utility company came by and inspected the entire driveway, sealing three water meters (ground floor + upper floor for non-potable water from the cistern as well as the emergency filling of the cistern). Because of this, I now pay slightly lower fees each month. However, from a business perspective, this will only really pay off in the long term with significantly higher water prices, despite connected toilets, washing machines, and an outdoor faucet (garden).
A 5.8m² (62 ft²) concrete cistern, a domestic water system, and excavation including separate piping cost an estimated just under 5,000.
A 5.8m² (62 ft²) concrete cistern, a domestic water system, and excavation including separate piping cost an estimated just under 5,000.
Pitiglianio schrieb:
Who actually inspects the professional installation of the surface drainage required in the building application/building permit?
I mean, does anyone come by to check the size of the cistern, the presence of an infiltration trench, or the joint spacing of the permeable paving?That’s why I mentioned earlier that in the end no one really cares about the execution. It is only an inspection and approval based on documentation. You yourself are responsible and obligated regarding the actual implementation.
netuser schrieb:
That’s why I mentioned earlier that in the end, nobody cares about the actual construction work. It’s just an inspection and approval based on documentation. You are responsible and accountable for the execution yourself.I believe most people also don’t want a stagnant, muddy pond with mosquitoes and pests developing in their garden 😀Pitiglianio schrieb:
Who is actually responsible for verifying the proper installation of the surface drainage required in the building application/building permit?
I mean, does someone come by to check the size of the cistern, the presence of an infiltration trench (soakaway), or the joint spacing of the permeable paving? We did not have a base inspection, no final inspection, or anything like that. Nobody ever showed up.
The only thing that actually happened—unannounced—was an on-site inspection regarding the drainage. Beforehand, you submit an application with a sketch showing the roofs, paved areas, etc., which is then used to calculate the fees.
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