Cistern water level indicator

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Boerdoc

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We have a 4000 gal. cistern (2x2000) and last night we ran out of water unexpectedly. We were doing lots of irrigating and our wells could not keep up I guess. I would like to install a water level indicator that would tell me when we are low or when we need to stop the irrigating. We have a family of 5 at home so our needs are not 4000 gal/day. Our wells produce 1-2 gal/minute or so. This varies tremendously. 1-2 gal is during the slow times. So at least 1440 gal/day. The cistern is only 30 feet away from the garage. I already have an unused 24v sprinkler line if it can be wired with that.

Any suggestions? I would like to be able to monitor remotely in the house. This is an option but I am not sure of the quality.
http://rainharvesting.com.au/product/wireless-tank-gauge/

Thanks for any advice.
 

Smooky

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I would use a normally closed, piggyback ,float switch approved for potable water and connect it to an alarm or light etc.
 

Boerdoc

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Thanks smooky. That will work for an alarm. I want to have a level indicator instead.
 

Valveman

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There are all kinds of ways to do levels. What Smooky described could be a level or alarm. And you could do three or four float switches at different levels with the bottom one being the alarm.

You could also just have a float in the tank attached to a rod that sticks up out of the tank.

If you want to get fancy use a pressure transducer at the bottom of the tank that sends a 4-20ma signal to a receiver at the house.
 
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