Policy information sourced from Enfield Development Managament Document (DMD)

DMD 58 Water Efficiency

In accordance with Core Strategy Policy 21 and the objectives for water efficiency set out in the London Plan all new development will be required to maximise its water efficiency, subject to technical and economic feasibility and other relevant planning considerations.

A. Residential Development

New residential development, including new build and conversions, will be required to achieve as a minimum water use of under 105 litres per person per day.

Major residential development will be required to achieve as a minimum, the following standards unless it can be demonstrated that it is not technically feasible to do so:

  • 2013 to 2015 – 90 litres/person/day
  • 2016 onwards – 80 litres/person/day.

B. Non Residential Development

The Council will require major non-residential development involving the extension, replacement or creation of new non-residential floorspace or a combination thereof to exceed the following standards under WAT1 of BREEAM 2011 or equivalent rating/scheme if this is replaced or updated:

  • 2013 to 2015 – Exceed a 12.5% improvement in water efficiency over notional baseline
  • 2016 to 2018 – Exceed a 25% improvement in water efficiency over notional baseline
  • 2019 onwards – Move towards 65% improvement in water efficiency over notional baseline.

An assessment of the efficiency of the building’s domestic water consuming components is undertaken using the BREEAM Wat 01 calculator. The water consumption (litres/person/day) for the assessed building is compared against a notional baseline performance.

For all other developments including changes of use, conversions, extensions and refurbishments captured by the planning process, the highest level of water efficiency will be sought.

Greywater Collection

The Council will seek to encourage the inclusion of rainwater collection and greywater recycling. All new major developments should undertake a rainwater and greywater use feasibility study. Where collecting and reusing water is feasible, it should be included in the proposed development.

This Policy should be read in conjunction with Core Strategy Policy 21 and 46.

For more information please see the Development Managament Document (DMD)