Changes

The cost of underground tanks can be high and variable in cost per m3 of storage (seem to average around US$30-40 per m3 of storage, sometimes a lot more depending on various factors.– sub * Sub-surface hemispherical tanks made from stone masonry and bricks/cement in Ethiopia cost in the range 113 - 219 Euro per m3 of storage including all costs, with costs varying with parameters such as trucked water for construction and solidity of construction (more solidly built tanks in clay areas cost more).