Liquid run-off disposal system

An improved liquid run-off disposal system comprising:

• an infiltration chamber having first and second sidewalls, in cross-sectional view the first and second sidewalls follow an arcuate path, and each include an inner surface facing an inside of the chamber and outer surface facing an outside of the chamber, and wherein the infiltration chamber is manufactured from a moulded plastics material;
• the first and second sidewalls each include a plurality of louvre-shaped apertures provided integrally therein, wherein in cross-sectional view each louvre-shaped aperture includes an upper surface and a lower surface which are substantially planar, substantially parallel with the respective upper and lower surfaces of adjacent louvre-shaped apertures, and angled upwards from the outer surface towards the inside of the chamber;
• and,
• the upper and lower surfaces each comprising one or more angled sections, each angled section extending at an angle relative to an adjacent section of the upper and/or lower surfaces respectively and being arranged so as to form a substantially vertical flow path through a portion only of the louvre-shaped aperture resulting in a serpentine flow path through the louvre-shaped aperture, the angled sections of the upper and lower surfaces being arranged at an angle and of a length so as to substantially overlap when viewed in a horizontal direction so that the apertures admit the exit of water but substantially inhibit the entry of soil wherein, in use, when liquid run-off is piped into the infiltration chamber it can drain away by passing through the apertures and infiltrating into the surrounding soil.