There may be an application here
that you could use. I've seen these drainage crates advertised in the construction papers. Used in building soakaways or for water collection, a series of modular plastic crates are buried - the voids within the crates provide storage space for excess water and allow it to gradually seep away. The crates are wrapped in a permeable geotextile that will allow water into the box, but keep the fine material in the soil from entering. The voids are much greater than conventional soakaways, so more water storage and the crates are strong enough to be used in carparks etc.
There is no easy solution and some site investigation would be required to determine the soil types. It would be pointless installing these only to find that you have the same problem if the water cannot escape and the box is full. It may be possible to connect the box to a surface water sewer and allow the water to run off. See if you can find a groundworks contractor who knows about SUDS - Sustainable Urban Drainage Systems - and pick their brains.
is at least one supplier who sell the crates
- there are three depots in Ireland, Dublin, Cork and Belfast.