Moving water around the UK is part of the solution Water Industry - - PowerPoint PPT Presentation

Moving water around the UK is part of the solution

Water Industry Forum 15th Oct David Essex General Manager - Water Strategy & Innovation Severn Trent Water

The problem is clear

• more variable weather
• more people living in UK

By the middle / end of this century we will be facing .......

2 Moving water around the UK is part of the solution – D Essex, STW

The South East is facing supply demand deficits in the order of 850 Ml/d by 2040

• Normal year - there is enough water

until 2035 using existing supplies

• However in a dry year there are deficits

up to 550Ml/d (Dry Year Annual Average) ~ 3.3 m people

• In the critical 3 months in summer, there

is a substantial deficit of up to 850 Ml/d (Dry Year Critical Period) ~ 5.6m people

− During these periods, cannot rely on raw water being available in rivers.

3 Moving water around the UK is part of the solution – D Essex, STW

In South East South East deficits

Source : Draft WRMPs

We need to reduce demand AND secure other sources of supply

4

Flexible and adaptable solutions to deal with whatever the future brings

• Demand side

− Use less − Waste less − Reuse where possible

• Supply Side

− Mixture of sources − Grab it when its there − Store it − Move it to where we need it We need ALL of the ABOVE

Severn Trent are working on ALL of the ABOVE

Moving water around the UK is part of the solution – D Essex, STW

We have a credible demand side plan

Severn Trent already have the lowest distribution input per customer

• Drive resource efficiency even lower

− Further reduce leakage

• total and response times
• current record low levels
• 17% reduction 2010-2020

− Further improve water efficiency

• STW largest volume & lowest unit cost in industry
• Physical modifications - devices
• Behaviours - Education,
• Meters- means to an end
• Use non-potable where possible

− Innovation in Reuse - Grey water / Rainwater Harvesting

• Severn Trent Centre
• Coventry school – RWH
• Birmingham Big Water Plan
• Innovation workshop – supply chain
• Research Fellowship & Eng D - Exeter

5 Moving water around the UK is part of the solution – D Essex, STW

Recent weather patterns have highlighted the variability and uncertainty in weather

• Adapting our supply systems to be able

to cope with unexpected shocks

− Periods of drought − Severe cold / hot weather − Severe rainfall or wind

• Loss of major assets - power or sites

themselves

− Loss of production or distribution systems

• Major landslips aqueduct / pipeline damage
• Large volumes of bursts

− Security threats

Being resilient to future risks

6 Moving water around the UK is part of the solution – D Essex, STW

Droughts 2010 2011 2012

It will be important to have flexible and adaptable supply side options

Being able to adapt to changes in seasonal and geographic locations

7 Moving water around the UK is part of the solution – D Essex, STW

• Both surface water and ground water
• Ability to grab water when it is available

across seasons

• Storage in existing impounding reservoirs
• New storage underground / above ground
• Ability to transfer bulk supplies across

regional boundaries Trading needs to be part of the suite of

• ptions available in the future

Any trading option needs to be cost effective

• Each water company has looked at the
• ptions for additional supply in the future
• If a trading option can beat the next best

cost – then it should be seriously considered

• Long life assets

Draft Water Resources Management Plans

8 Volume (Ml/d) Demand Management

London – preferred options

• 10

20 30 40 50 60 70 80 90 100

• 50

100 150 200 250 300 350

AISC (p/m3) Demand Management Effluent re-use Source: Thames Water draft WRMP

Target price

Moving water around the UK is part of the solution – D Essex, STW

Our PR14 plan includes a number of cost effective trading options for bulk raw water

Commercial discussions are ongoing

9

Banbury Milton Keynes

Severn Trent Thames Affinity

Draycote Reservoir

Moving water around the UK is part of the solution – D Essex, STW

• Relatively short pipeline
• Move raw water between river basins
• Volume 200-300 Ml/d

~1.5 m people

• Other potential beneficiaries

(agriculture, environment – low flows)

There are a number of potential barriers that will need to be

• vercome
• Willingness to “contract out” peak water resources
• Ability to deliver contract volumes reliably when needed
• Loss of raw water along the way
• Environmental concerns

Mindset by companies to make the market work for benefit of customers Regulator support & robust contracts Abstraction controls – current and reformed Impact assessment – including positive benefits

10 Moving water around the UK is part of the solution – D Essex, STW

• Part of a sensible balance of demand and supply side options
• Part of a portfolio of supply side choices
• Flexible and adaptable for uncertain future

As long as it is cost effective, available when needed and viable

11 Moving water around the UK is part of the solution – D Essex, STW

Conclusion : Moving water around the UK is part of the solution

Why wouldn’t we consider it ?