What size of housing development would be precluded from getting permission until the Newbridge Interceptor is in place

My first question at today’s Municipal District meeting;
‘Approximately what size of housing development would be precluded from getting permission until the Newbridge Interceptor is in place to cater for extra sewage and when is the interceptor likely to happen?
Here is the report Issued by: Mr E. Fagan, Administrative Officer, Water Services – As part of all planning permissions, Irish Water has asked the council to insert a condition that any development is subject to attaining a connection agreement with them. This relates to capacity of public water & wastewater services infrastructure to facilitate such development. In relation to Newbridge town there are capacity constraints in the foul sewer network which can result in overflows to River Liffey causing environmental pollution. A condition may be inserted in relevant planning permissions that no development can commence until the contract for the Newbridge Eastern Interceptor Sewer is signed. All applications are, however, examined on a case by case basis and impact on the sewer network would be assessed to see if phasing on a small scale of such development could be permitted. It is anticipated that work will commence on the Newbridge Interceptor in December 2017 subject to the normal Land Acquisition, Planning and Tendering processes being complete with construction expected to last 18 months