ᐅ How long can rainwater be stored in a rainwater harvesting tank?
Created on: 28 Jun 2018 21:19
S
stefansteiner
We have a plot of land in Vienna measuring 450m2 (4844 sq ft) and a roof area of about 100m2 (1076 sq ft) – our house construction will start this September.
Although everyone advises against buying a rainwater cistern (they say it’s never cost-effective), I simply want to make use of the water resource (for now only for the garden – not for the house), but maybe that will change later.
So – I have the option to buy an 8000L (2100 gallons) cistern for the same price as a 4000L (1050 gallons) one.
My idea is that with an 8000L system I could build up a water surplus over the winter and start spring with a full tank, then gradually use the buffer until summer.
In your opinion, does this make sense or is it better to just buy the 4000L?
Thank you in advance for your feedback and best regards from Vienna,
stefansteiner
Although everyone advises against buying a rainwater cistern (they say it’s never cost-effective), I simply want to make use of the water resource (for now only for the garden – not for the house), but maybe that will change later.
So – I have the option to buy an 8000L (2100 gallons) cistern for the same price as a 4000L (1050 gallons) one.
My idea is that with an 8000L system I could build up a water surplus over the winter and start spring with a full tank, then gradually use the buffer until summer.
In your opinion, does this make sense or is it better to just buy the 4000L?
Thank you in advance for your feedback and best regards from Vienna,
stefansteiner
niri09 schrieb:
These are one-time costs and can be neglected in the long run.Well, if 2,000 to 5,000 euros (about 2,200 to 5,500 USD) is negligible for you... good for you. Unfortunately, not for me.
The potential savings are just far too low.
I just want to point out that a cistern is increasingly more of a hobby. It never really pays off.
Of course, it’s different if it’s required by the local authority (building permit / planning permission).
Best regards,
Andreas
andimann schrieb:
I just want to point out that a cistern is always more of a hobby. It’s never really cost-effective.In this thread, the question was not whether a cistern is worth it or not, but whether to choose a 4,000L (1,057 US gallons) or 8,000L (2,113 US gallons) tank.
S
stefansteiner29 Jun 2018 20:29Hello,
I would like to sincerely thank everyone for the lively discussion.
At the moment, my mind says it’s nonsense, but my heart says go for it. Why? Even if it sounds silly, since having children I just want to take more responsibility myself, and that includes the sensible use of resources. Next, I am considering an off-grid solution for electricity (but that’s another story).
May I ask one more question:
- Could you please share the components of your rainwater harvesting system (e.g., type of controlled inflow, floating intake, type of pump, etc.) and would you recommend them? For me, quality comes before quantity (although if it’s cheap and good, I prefer that even more).
I wish you a great Friday and nice weather for the weekend.
Best regards, Stefan
I would like to sincerely thank everyone for the lively discussion.
At the moment, my mind says it’s nonsense, but my heart says go for it. Why? Even if it sounds silly, since having children I just want to take more responsibility myself, and that includes the sensible use of resources. Next, I am considering an off-grid solution for electricity (but that’s another story).
May I ask one more question:
- Could you please share the components of your rainwater harvesting system (e.g., type of controlled inflow, floating intake, type of pump, etc.) and would you recommend them? For me, quality comes before quantity (although if it’s cheap and good, I prefer that even more).
I wish you a great Friday and nice weather for the weekend.
Best regards, Stefan
Hello stefansteiner
I have a 10,000-liter (2,640-gallon) concrete cistern. Of course, it had to be installed with a crane.
I am absolutely satisfied. Rainwater from the roof runs through a filter that I clean about every 2 years. Just rinse it well and it's done. I have a controlled inflow and a floating intake.
The water is always clear and cool. There are no issues with algae or anything like that—they simply don’t occur.
I would definitely do it again.
Steven
I have a 10,000-liter (2,640-gallon) concrete cistern. Of course, it had to be installed with a crane.
I am absolutely satisfied. Rainwater from the roof runs through a filter that I clean about every 2 years. Just rinse it well and it's done. I have a controlled inflow and a floating intake.
The water is always clear and cool. There are no issues with algae or anything like that—they simply don’t occur.
I would definitely do it again.
Steven
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