GOOD PRACTICES FOR MANAGING RISKS OF SCARCITY IN WATER SUPPLY

Francisco CubilloDeputy Director of Research, Development and Investigation

IWA WORLD WATER CONGRESS AND EXHIBITION

BEIJING, 2006 SEPTEMBER

URBAN WATER SECURITY – A full day on planning and response to ensure urban water resilience

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

WATER MANAGERS EVERY STAKEHOLDERSSOCIETY

CRISISCIRCUMSTANCEI WISH, A FEELING

SECURITY RISK FAILURE

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

PROBABILITY

AFFECTIONS

100%

0

INCIDENCES&

CONTINGENCIES

NORMALITY

CRISIS

DISASTER

QUALITY OF SERVICE&

RISK STANDARDS

DROUGHTS

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

SCARCITY & DROUGHT

An smooth event

In water supply is always operational

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

EXTREME SCARCITY

SEVERE SCARCITY

MODERATE SCARCITY

USE OF STRATEGIC RESERVE

AVERAGE EVOLUTION

LOW RAINFALL

NORMAL CONDITIONS

FLOOD

Actions

RE

SO

UR

CE

S M

AN

AG

EM

EN

T

DE

MA

ND

M

AN

AG

EM

EN

T

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

MadridMadrid

Public Company

Supplies drinking and sewerage water to 6 million people in the region of Madrid (Spain)

•177 municipalities

•14.000 km Distribution Network

Public Company

Supplies drinking and sewerage water to 6 million people in the region of Madrid (Spain)

•177 municipalities

•14.000 km Distribution Network

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

44 Pumping Stations44 Pumping Stations

242 Service Reservoirs242 Service Reservoirs

13 Water Treatment Works13 Water Treatment Works

59 Wells Fields59 Wells Fields

14 Dams14 Dams

2533 km transport pipes2533 km transport pipes

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

0

50

100

150

200

250

300

350

400

1855 1865 1875 1885 1895 1905 1915 1925 1935 1945 1955 1965 1975 1985 1995 2005

Un

itar

y co

n. l

/hab

día

Unit.consum. Droughts

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

1970 1975 1980 1985 1990 1995 2000 2005

Independent consumption

Level of Risk

0

5%

10%

Acceptable level of risk (4%)

LEVEL OF RISK OF DROUGHT STARTUP

DROUGHT PERIODS

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

1970 1975 1980 1985 1990 1995 2000 2005

Change in operation

Independent consumption

Level of Risk

0

5%

10%

Acceptable level of risk (4%)

LEVEL OF RISK OF DROUGHT STARTUP

1993Drought Manual

2003Supply Manual

Valmayor1976

STRUCTURAL ACTIONS

El Atazar1973

New Wells1992

Tr.San Juan1995

OPERATIONAL ACTIONS

DROUGHT PERIODS

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

DROUGHT MANUAL 1992

SUPPLY MANUAL2003

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

0

100

200

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1000

sep-

04

oct-

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nov-

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dic-

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jan-

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feb-

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mar

-05

apr-

05

may

-05

jun-

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jul-0

5

aug-

05

sep-

05

oct-

05

nov-

05

dic-

05

jan-

06

feb-

06

hm

3

Effective capacity Normal

Phase 1

Phase C

Phase 0

Phase 2

Phase 3

Phase B

Maximun storage 946 hm3Effective capacity

DROUGHT BEGINNING

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

0

100

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1000se

p-04

oct-

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nov-

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dic-

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jan-

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feb-

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mar

-05

apr-

05

may

-05

jun-

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jul-0

5

aug-

05

sep-

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oct-

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nov-

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dic-

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jan-

06

feb-

06

hm

3

Effective capacity P ercentil 10 Normal Real Evolution

Phase 1

Phase C

Phase 0

Phase 2

Phase 3

Phase B

Drought Committee formationMay 2005

Start of demand reductionJune 2005

Decree 97/2005 September 2005

Decree 12/65September 05

CYII press campaignJuly 2005

Start of w ells use

March 2005

Drought Office formation

September 05

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

Co

sts

Risk of shortages

Cost of supply Cost of droughts

Economic risk level

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

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Urban Water Security – A full day on planning and response to ensure urban water resilienceIWA World Water Congress and ExhibitionBeijing, 2006 September

REAL INTEGRATION

PLANNING <> OPERATION

EMERGENCIES <> ROUTINES

INSTITUTIONS <> OPERATORS <> USERS

RESOURCES <> INFRASTRUCTURES

TECNICIANS <> POLITICIANS <> MEDIA

TEORY <> PRACTICE

CULTURE <> ECONOMIC DEVELOPMENT <>RISK ACCEPTANCE