Underground storage system with v shaped support legs

An assembly system for storing water underground, wherein the assembly system is comprised of a plurality of individual adjoining four-sided modules forming a four-sided tessellation,

• wherein each four-sided module is comprised of a four-sided-shaped top, legs extending downward from said four-sided-shaped top,
• wherein modules having two legs extending vertically from the four-sided-shaped top, and positioned inward from the edges of the four-sided-shaped top,
• wherein said legs mirrored to one another, each having a general V shape, where the intersection point of each leg face inward, toward each other, and extending inward toward each other where the sides intersect,
• wherein at least one said module has an access hole in its top for access into said four-sided tiling shaped assembly system after installation underground.

An assembly system for storing water underground, wherein the assembly system is comprised of a plurality of individual adjoining modules forming a tessellation,

• wherein each module is comprised of a top, a combination of walls and/or legs extending downward from said top depending on their position within the assembly,
• wherein modules along the perimeter of the assembly contain one wall equal in length to the top to define the perimeter of the assembly to create an overall enclosed storage system,
• wherein, said wall is defined by extending vertically downward from said top, along its edge so that said top and walls intercept one another at their ends,
• wherein said modules along the perimeter have one or more legs extending vertically from the top, and positioned inward from the edges of the top, and generally positioned on the side of the top opposite of the one having a wall, said one or more legs and extending inward to the center of the top,
• wherein modules not along the perimeter of the assembly only having one or more legs extending vertically from the top, and positioned inward from the edges of the top, wherein said one or more legs having a general V shape, wherein the resulting assembly of internal and perimeter modules is defined by having perimeter walls, and internal legs, said legs not in contact with one another within modules or between adjacent modules, one foot but not more than sixteen feet, wherein said modules of assembly are arranged as a tiling, wherein at least one said module has an access hole in its top for access into said tiling shaped assembly system after installation underground.