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Changeling17 Jul 2018 13:29By installing a cistern with an emergency overflow connected to the sewage system, we can reduce the rainwater charge to 10% of the usual estimated amount. If the overflow is directed to infiltration, it can even be reduced to 0%. This would save us about €250-300 per year, which is why we are interested in installing a cistern.
Unfortunately, there are many different suppliers, options, and prices available here, so my question is: What did you pay attention to when purchasing, what can you recommend or not recommend, and what were your prices?
Our key requirements:
- We would like a capacity of around 6000-7000 liters (1600-1850 gallons), as we have a large garden with many beds.
- A convenient withdrawal point is essential for us; preferably a pump with good pressure and a type of faucet that can be mounted at waist height.
- So far, I am leaning toward a concrete cistern.
Unfortunately, there are many different suppliers, options, and prices available here, so my question is: What did you pay attention to when purchasing, what can you recommend or not recommend, and what were your prices?
Our key requirements:
- We would like a capacity of around 6000-7000 liters (1600-1850 gallons), as we have a large garden with many beds.
- A convenient withdrawal point is essential for us; preferably a pump with good pressure and a type of faucet that can be mounted at waist height.
- So far, I am leaning toward a concrete cistern.
I'm not entirely sure about the details (that was my husband's area of expertise...) We have a concrete cistern (which also had to be drive-over capable since it's in front of the house). It's sturdy, durable, and well-tested. I read somewhere that concrete has an influence on the water quality that is better than plastic, but I can't recall the specifics exactly...
In terms of volume, it's not just about how much is consumed, but also about the potential amount of water collected from the roof. There are online calculators that can estimate how much rainfall your location receives and how large your cistern can be.
In my opinion, making it too large doesn’t make much sense either.
In terms of volume, it's not just about how much is consumed, but also about the potential amount of water collected from the roof. There are online calculators that can estimate how much rainfall your location receives and how large your cistern can be.
In my opinion, making it too large doesn’t make much sense either.
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Gartenfreund18 Jul 2018 07:28Precisely because of the cost, I installed a rainwater cistern a few years ago.
I have also shared my experience here in the forum.
Please keep in mind that no matter how large a cistern is, if not enough water flows into it because the catchment area is too small or it simply doesn’t rain, then you won’t have enough water for irrigation.
Just calculate at least 10 liters per m² (1 gallon per ft²) needed, and you can figure out for yourself how long the water in a full cistern will last for you.
To save fees and for peace of mind, a cistern is certainly a good option. If you build it yourself, it is also relatively inexpensive to install. With the money saved, and probably a bit more, you can have a well drilled (drilled, not driven) and install a submersible deep well pump. Then, even in the current weather conditions like those in NRW, you will always have enough water for the garden.
I have also shared my experience here in the forum.
Please keep in mind that no matter how large a cistern is, if not enough water flows into it because the catchment area is too small or it simply doesn’t rain, then you won’t have enough water for irrigation.
Just calculate at least 10 liters per m² (1 gallon per ft²) needed, and you can figure out for yourself how long the water in a full cistern will last for you.
To save fees and for peace of mind, a cistern is certainly a good option. If you build it yourself, it is also relatively inexpensive to install. With the money saved, and probably a bit more, you can have a well drilled (drilled, not driven) and install a submersible deep well pump. Then, even in the current weather conditions like those in NRW, you will always have enough water for the garden.
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Changeling18 Jul 2018 07:38Tanita schrieb:
I'm not exactly sure about this (it was my husband's area of expertise...). We have a concrete cistern (it also had to be drive-over, since it's located in front of the house). Solid, durable, well-tested over time. I read somewhere that the concrete can have an effect on the water quality that is better than plastic, but I can't quite recall the details...
Regarding volume, it's not just about consumption, but also about the total "water potential" coming from the roof. There are online calculators that can estimate how much rainfall reaches your property based on your location and how large the cistern can be.
In my opinion, making it too large doesn't make sense.Which manufacturer and model did you install, and what was the cost? I already checked the online calculator; it should fit well.
@Gartenfreund: Same question for you.
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Changeling18 Jul 2018 12:25So far, I have come across brands like Mall, Aquaroc, Finger, and Rewalux. I haven’t been able to identify any significant advantages or disadvantages, but Mall seems to be quite widespread.
It is important to ensure that the base part is pre-mortared with the cone at the factory (which is only possible up to a certain size), and there are apparently different types of filters that make a slight difference. Also, the inlet should be “calmed” or flow-stabilized. That’s about all I gathered from 30 minutes of Googling and limited knowledge.
I will probably seek advice from dieregensammler, who seem to act as some kind of intermediary and have access to various manufacturers and systems.
It is important to ensure that the base part is pre-mortared with the cone at the factory (which is only possible up to a certain size), and there are apparently different types of filters that make a slight difference. Also, the inlet should be “calmed” or flow-stabilized. That’s about all I gathered from 30 minutes of Googling and limited knowledge.
I will probably seek advice from dieregensammler, who seem to act as some kind of intermediary and have access to various manufacturers and systems.
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