The ABC reports that Hill Industries, the people that make Hills Hoist, has just turned over $1b in revenue. No doubt due to the good old Australian company's water tank division called Team Poly.  Team Poly manufacture a huge range of polyethylene water tanks in all shapes and sizes.  Included in their water tank range are:

• Corrugated Water Tanks
• Drink Water Tanks
• Modular Water Tanks
• Slimlie Water Tanks
• Septic Tanks

You can check out the range at the Team Poly website.