We have been installing Abbotsford Concrete Products Aquapave system with good results. The paved surface performs just as traditional pavers with virtually no surface runoff. Many factors contribute to the overall permeability of a picp system, mostly whether or not the contractor follows the proper installation guidelines i.e. not compacting the sub-base, adequate base of varying sizes with no fines, use of filter fabrics, and an approved joint stabilizer. Abbotsford attempts to solve this problem by only selling the system to certified installers who have completed their course. While they are a west coast company, I noticed in the latest Interlocking Concrete Pavement magazine that they have east coast manufacturers licensed to manufacture and sell the system. Check it out online at
Abbotsford Concrete Products - pavingstones.com