Precast concrete septic tanks are used in more applications in Ontario than any other type, and for good reason. Precast concrete is strong, dense and watertight. Tanks can be back-filled without special procedures, imported material or filling with ballast water. They can be hooked up and used immediately. Concrete wont float, stretch, shrink or bend. Our tanks are designed and manufactured to meet Ontario’s specifications for use in our harsh northern climate. Our tanks have a history of reliability and durability that spans decades.