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The report produced for the Welsh Government by Environmental Policy Consulting (January 2017) highlights the positive breadth of SuDS economically, socially and environmentally:
1. Use of SuDS in Wales alone, could save up to £9,000 in capital cost alone per new home. Based on the Objectively Assessed Housing Need (OAN) for the IHMA of 11,420 new dwellings by 2036, by simple translation, this would represent a saving of just over £100 million within the IHMA.
2. use of SuDS could generate benefits of well over £300 per household per year on large developments.
3. For the 110,000 homes planned for Wales by 2021, use of SuDS could save Wales nearly £1 billion in capital construction costs and generate benefits of over £20 million per year.
From Table 6 (page 41) of the report: Evidence on the benefits of SuDS include
* Improve water quality and protect drinking water resources
* Limit flows entering system and therefore maximise network capacity
* Improve health and wellbeing
* Help manage air quality
* Increase property value
* Enhance biodiversity
* Provide education
* Improve thermal comfort
* Provide amenity and recreation
The report also details ten Case Studies in the appendices which we would ask the Council to review and take in to consideration.