limanika wrote:tom_boy wrote:Gathige wrote:@Kamundu, Alternatively, you can do an underground stone water tank and have the volumes you need at the same cost as a plastic tank. The stone one would last longer if well done and water always cool.
I believe a stone one is cheaper the higher the capacity required.
In high density urban areas without trunk sewers, water table is quite high thanks to effluent from neighbouring septic tanks.
As such some masonry underground water tanks are always full i.e. ground water seeping into the tank through invisible joints on tank walling due to pressure.
Perhaps this would explain why @And1589 would rather you installed a plastic tank inside a pit with masonry walling…
@Laminika. Really? Stuff from Septic tanks nearby can seep into a well done underground stone tank? Wanted to do one in such an area but you make me think thrice.
I happen to have a normal stone tank back at Oocha which I remember was done using those Quarry stones, not Machine cut that come from Juja. Plaster and finishing was very well done and its never leaked water out. I am Just thinking why the tank is still strongly holding water full - with no seeps yet you say an underground one will suck water from "outside"..
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