We Manufacture Ferro cement water tanks in most sizes, but 5000 (22,500L) and 6000 (27,000L) are the most popular sizes, and this is the size that has become the most cost effective. (We build more of them so we have become more efficient at making them.)
A 5000-gallon (22,500L) tank is $3550 and a 6000-gallon (27,000L) is $3850, Underground 5000 gallon (22,500L) is $4150. Underground 6000 gallon (27,000L) $4450. In ground thick wall tanks (5000 - $3650, 6000 - $3950)
These prices are include G.S.T and delivery within 30km of Ngaruawahia.