Canwest Tanks manufactures polyethylene tanks in sizes ranging from 40 imp. gals. up to 5,600 imp. gals. using high-density polyethylene (HDLPE) resin with UV inhibitor, making them suitable for outdoor applications. All our polyethylene tanks are CSA/NSF 61 certified for potable water application. Therefore, any tank may be used safely for storage of potable (drinking) water.
The high grade resin contains UV inhibitors to allow long-term open air exposure without deterioration of the tank walls when installed above ground.
Our in-ground tanks are designed for strength with rib structures and wall thickness allowing for burial, normally at a depth of up to 2 ft. earth cover, but we can make them for burial up to 5 ft.
Poly tanks are: