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Nutrient neutrality: issues, impacts and solutions

Join this webinar to discover what nutrient neutrality is, what it means in practice, and how it can be achieved.

A susdrain event in association with:

Many lakes, rivers, estuaries, wetlands and other sites dependent on water are important and protected habitats. Nutrients, such as nitrates and phosphates, support excess growth of algae and vegetation which are damaging to the natural water environment because they out-compete the natural vegetation and reduce oxygen supply to the water. It is crucial that these habitats are not destroyed or adversely impacted by new development, which brings with it potential sources of nutrient input.

Water companies are required under the Environment Act to assess the environmental impacts of the sewerage system including the impacts of nutrient loads from wastewater treatment works on protected sites.

Natural England states that ‘Development plans can be considered ‘nutrient neutral’ where they can demonstrate that they will cause no overall increase in nutrient pollution affecting specified Habitats Sites’.

This webinar will set the scene and examine the issues from the point of view of:
  • National regulators (eg Natural England) who are concerned about the impact of nutrients on water quality and habitats, and are developing resources to support those involved in the planning and development process.
  • Local planning authorities who decide planning permission for development.
  • Water and sewerage companies who need to plan for the management of nutrients at designated sites.
The webinar will feature practical approaches to manage nutrients using wetlands and Sustainable Drainage Systems (SuDS) as well as guidance from The Rivers Trust and CIRIA.

Why attend
  • Understand the issues surrounding nutrient neutrality.
  • Hear how nutrient neutrality impacts the process of new development.
  • Learn about practical approaches to nutrient management using wetlands and Sustainable Drainage Systems (SuDS).
  • Earn valuable CPD.
Who should attend
  • susdrain, CaBA CIWEM members
  • Local authority planners
  • Private sector planners
  • Developers and development consultants
  • Land agents
  • Environmental consultants
  • Sewerage undertakers
  • Tier 1 engineering consultants
  • SuDS designers
  • Landscape architects

Monday 28 November 2022
14:00 – 17:15

14:00 Welcome and introduction
Peter Bide, Urban Working Group Chair, CaBA

14:20 Nutrient neutrality: the issues
Simon Thompson, Principal Adviser - Strategic Solutions, Natural England

14:40 Nutrient neutrality: the impacts on planning
Rachel Jones, Ecology Manager (Interim), Wiltshire Council

15:00 Nutrient neutrality: the impacts on water and sewerage companies
Laura Mollon, Technical Policy Advisor, Water and Wastewater Strategic
Planning, Northumbrian Water

15:20 Interactive discussion and Q&A

15:30 Break

15:40 Nutrient neutrality: solutions - wetlands
David Johnson, Technical Director, The Rivers Trust

16:00 Nutrient neutrality: solutions - Sustainable Drainage Systems (SuDS)
Dr Louise Walker, Senior Research Manager, CIRIA
Jo Bradley, UK Director of Operations, Stormwater Shepherds
Phil Williams, Technical Director, The Environmental Protection Group

16:20 Nutrient neutrality: solutions - case study
Dr Martina Girvan and Renuka Gunasekara, Technical Directors, Arcadis

16:40 Interactive discussion and Q&A

17:10 Closing remarks

Free to attend for:

  • susdrain partners and supporters
  • CIRIA Biodiversity Community of Practice members
  • CIRIA, CaBA and CIWEM members
  • Non-members
Please sign in or create an account to register online for this event.
If you are experiencing issues registering online, please complete and return the booking form to Susan Richards.
Alternatively please contact us on 07933 181 765 or email our Customer Services team.

Joining instructions will be sent 10 days before the event. The link to attend the webinar is strictly personal and should not be shared.

Notice for new bookings from EU/EEA customers only.
CIRIA is currently unable to directly process your transaction if you are purchasing from the EU/EEA region. If you wish to book onto this event please email your request to [email protected] and we will respond in the first instance.

Terms and Conditions
Click here for details of our terms and conditions that will apply.
Personal data is gathered in accordance with CIRIA's privacy policy.

Further information
For further information on CIRIA membership and other services, please contact:
Telephone: 07933 181 765
Email: [email protected]
11/28/2022 2:00 PM - 5:15 PM
GMT Standard Time

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