Water Resources

Informational Needs of Operators of Water & Wastewater Systems

OECD Workshop on Improving the information base to better guide water resource decision-making, 4-7 May, 2010, Zaragoza, Spain

Jack Moss

AquaFedTHE INTERNATIONAL FEDERATION OF

PRIVATE WATER OPERATORS

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Resources / Uses

• Like any natural resource, water is only a resourceif it is used to meet real uses and needs

• Water and wastewater are real and valuable uses of water resources. – Water bodies are a resource for water supply– Waste water is also a resource for water supply– Water bodies are receptors for discharge of used water and

storm-water

• Urban water and wastewater needs have to be combined with other uses: agriculture, industry, power, transport, leisure, environment, etc. so that these can coexist

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Information and the “span of control”

• Information is a key to good water management and combining many uses

• Integrated management of water requires:– Policy decisions– Administrative decisions– Planning decisions– Operational decisions

•Who takes these decisions•Over what geography •On what timescales•With what information•How are they coordinated

How far can information needs and data creation be shared and mutualised to improve efficiency and effectiveness?

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Data is required over different dimensions of water

• Data on the physical state of water is required for a range of different aspects

• Resource at point of abstraction– Quantity, Quality, Variability, Range, Extremes– Upstream risks and constraints (e.g. Potential pollution sources)

• Receptor absorptive capacity of water after use– Volume, Dilution, Vulnerability, Range, Extremes– Downstream risks and constraints

• In both cases a range of different temporal and geographical scales is also necessary– Season, time of day, time in week etc;– Hydrographic unit to operational zone & point of use / discharge

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Data is required over different time horizons

• Different management and planning purposes– daily for operational management

• Scheduling treatment, pumping, storage, demand matching, (dispatching), early warning, crisis management, customer relations, leakage

– seasonal for prediction and emergency preparedness• Reservoir & Aquifer management, Drought & Flood response,

Treatment regimes, Purchasing and works planning, Risk assessment and response preparation

– long-term for infrastructure planning purposes• Resource / receptor availability & variability• Demand forecasting (volumes, location, change, etc.)• Evolution of uses (own & competing)

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Different kinds of data

• Predictive (forecasting),– Masterplanning– Reserves planning

• Actual (real time management) – Operational management

• Historical (trends analysis)• Hard & interpreted data

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Creating and Collecting Data for Water Operations

• A virtuous circle of data & decisions– Good policy & good management require good data – They also

generate good data– Lack of data leads to poor policy and management– Data is not valuable information without interpretation

• Public & Mutualised data– Hydrological, Meteorological, Population, Land-use etc.

• Specific & Mutualise-able data– Captured for a specific purpose - is useful to others

• Sensitive data– Captured for a specific purpose & needs protection

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Improving Water Service Continuity - Algiers

• Algiers - 3,2 M people, growth rate of 1,7 %/an• A water stressed region• One of the contract objectives

– To improve the water supply from position at contract start in spring 2006 where:

• <10% of the population with uninterrupted supply • ~60% of the population with some supply every 24 hours• ~30% of the population with some supply every 2nd or 3rd day

– To 100% having continuous supply every day by April 2010

Information based on a presentation to OECD Capacity Building Seminar on Drafting Legislation and Oversight Bodies, Tunis,

by Clarissa VITIELLO, Contract Manager SEAAL, 8&9 juillet 2009http://www.oecd.org/dataoecd/23/2/43371773.pdf

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Petites SDEM 12 500 m3/j

Boudouaou540 000 m3/j

Hamma200 000 m3/j

SAA80 000 m3/j

Takbset450 000 m3/j

Eaux souterraines 320 000 m3/j

SYSTEME AEP D’ALGERSources of Supply for Algiers

Dessalement

2008: 17%Desalination

Barrages

2008: 52%Dams

Eaux souterraines

2008: 31%Groundwater

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The Main Kinds of Information Needed for this

Priority on medium to short term information (longer-term information needed to assure future sustainability)

• Water Resources: – Underground water data & modelling of Mitidja aquifer– Surface water – monitoring of Dams & rainfall

• Water Treatment (Production) – Flow measurements demand prediction

• Water Distribution – Zoning, pressure & flow measurements, network modelling, leakage, – (prediction , actual, trends)

• Customers – Customer feedback – customer behaviour & response• Evolution of Demand – population – urban planning • Energy – analysis & interaction over power challenges• Coordination with other activities – planning, progressing and

assessment of works programme – interaction with other services and infrastructure

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Progress to 24/7 Service

Wilaya d'AlgerEtat de la desserte en eau en mai 2006

(65% Quotidien + H24)

City of Algiers – Service StatusMay2006 (65% daily + H24)

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Progress to 24/7 Service

Wilaya d'algerEtat de la desserte en eau en Décembre 2006

Rouiba

Douera Baraki

Zéralda

Mahelma

Birtouta

Chéraga

Reghaia

Sidi Moussa

Saoula

Staoueli

Dar el Beida

Ouled Chebel

Les Eucalyptus

Draria

Khraissia

Kouba

Bordj el Kiffan

Ouled Fayet

Haraoua

Souidania

Ain Benian

El AchourHydra

Tassala el Merdja

Bouzareah Ain Taya

Djisr Ksentina

El Harrach

Rahmania

Bir Khadem

Hammamet

Alger

Dely Brahim

Baba Hassan

Bab Ezzouar

El Biar

Mohammadia

Beni Messous

Bordj el Bahri

Oued Semmar

El Marsa

Bourouba

Rais Hamidou

Hussein Dey

Bologhine

Bir Mourad Rais

El Hamma

Oued Koriche

Prenant en compte la mise en place des procédures d'économie de la ressource en eau (*)

(*) Directive N° 2026/SG/DAEP/MRE/2006 "Lignes directrices du plan d'économie d'eau": prévention sécheresse.

Distribution DécembreH24

2J/3

1J/2

1J/3

1J/4

1J/6

NA

NON SEAAL

ZONE COMPLEXE

Q

Distribution Décembre

Wilaya d'AlgerEtat de la desserte en eau en février 2007

(78% Quotidien + H24)

Février

City of Algiers – Service StatusFeb 2007 (78% daily + H24)

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Progress to 24/7 Service

Wilaya d’AlgerEtat de la desserte en eau en février 2008

(84% Quotidien+ H24)

City of Algiers – Service StatusFeb 2008 (84% daily + H24)

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Progress to 24/7 Service

City of Algiers – Service StatusFeb 2009 (97% daily + H24

Wilaya d’AlgerEtat de la desserte en eau en février 2009

(97% Quotidien + H24)City of Algiers – Service StatusFeb 2009 (97% daily + H24)

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Progress to 24/7 ServiceCity of Algiers – Service Status

April 2010 (H24)

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www.aquafed.org

AquaFedTHE INTERNATIONAL FEDERATION OF PRIVATE WATER OPERATORS