Taller Regional MAPA-CEPAL - La Asimilación del Cambio Climático en una Empresa de Servicio de Agua Potable y Alcantarillado Sanitario : Una ...
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Taller Regional MAPA-CEPAL
La Asimilación del Cambio Climático en una Empresa de Servicio de Agua Potable
y Alcantarillado Sanitario : Una Visión Desde Aguas Andinas
Carlos Berroeta Bustos
REGULATORY FRAMEWORK FOR SANITARIES SERVICES
Main Features
• Restructuring sector in 1989
• Separation roles of the regulator's and the EMPRESA CLIENTES GRUPO ECONÓMICO
service provider
Aguas del Altiplano 148,864 Marubeni
• Clear, transparent and common rules for all
Aguas Antofagasta 159,908 Grupo Luksic
operators
Aguas Chañar 88,709 Hidrosán-Icafal-Vecta
• State subsidy for pool families
• 1998 start process of private capital Aguas del Valle 205,894 OTPPB
• Today 95 % of clients in the country are ESVAL 579,427 OTPPB
served by private companies Aguas Andinas 1,725,516 Grupo Agbar-Suez
• Two models of participation : ESSBIO Ohiggins 219,040 OTPPB
Privatization Nuevo Sur 246,728 OTPPB
30 years concession ESSBIO Biobío 516,057 OTPPB
Aguas Araucanía 211,962 Marubeni
ESSAL 211,012 Grupo Agbar-Suez
Grupo Agbar - Suez
Aguas Décima 43,194 Marubeni
OTPPB Aguas Magallanes 49,518 Marubeni
9.30% 42.90% Marubeni Aguas Patagonia 26,697 Hidrosan-Icafal-Vecta
31.10% Grupo Luksic
Hidrosán-Icafal-
Vecta
AGUAS ANDINAS OVERVIEW
POPULATION AND COVERAGE
• Population : +6.8 Million Inhabitants.
• Customers : +1,7 Million.
• Operational Area : 70.000 Ha.
• Drinking Water Coverage : 100 %.
• Sewer Network Coverage : 98,7 %.
• Wastewater Treatment Coverage : 100 %
INFRASTRUTURE GENERAL DESCRIPTION
• Reservoir Volume : 220 Million M3
• Drinking Water Treatment Plants : 17
• WATER MANAGEMENT: • Groundwaters Wells : 215
• Total Distribution Networks Length : 12.500 km.
• 80% Surface Water Supply • Total Sewer Network Length : 9.500 km
• 20 % Groundwater Supply • Wastewater Treatment Plants : 12
• WASTEWATER TREATMENT
• 512 Million M3 of treated water returned back to the
rivers complying quality regulations.
AGUAS ANDINAS OVERVIEW
999 Glaciares con una sup de 388 km2
Laguna Negra 500 MM M3
Embalse El Yeso 220 MM M3
CLIMATE CHANGE CONTEXT
•
2010-2040 2040-2070 2070-2100
Long Term Prediction (Year 2100 - Chile Central Zone):
• Average Temperature Increase 2,5 - 3,5 °C.
• Average Rainfall Reduction 25% - 35%
• Impact on Surface Water Resources
• Decrease in Annual Total Surface Runoff Volume
• Seasonal Variation Modification:
Increase of winter-spring runoff – decrease of summer runoff.. 2010-2040 2040-2070 2070-2100
• Increase of winter runoff extreme events.
• Possible increase of extreme turbidity events
Impact on Water Management in the
Metropolitan Area
• Actual Scenario: Nowadays we are in the
6th consecutive drought year (no similar
scenario has being reported previously).
• It is expected more intense impacts in the
medium and long term (more frequency in
multiyear drought periods).
DROUGHT IN THE METROPOLITAN REGION
Present and Future Situation
• Annual rainfall of less than 70 % of the
historical average have appeared
consecutively since 2009 (6 years
now).
• Weather forecast based models predict
more probability of droughts over 3
years
• GENERAL STRATEGY FRAMEWORK
• Integrated Water Resources Management:
• Coordination and cooperation with other users (public and
private).
• Cooperation with universities and technical centers to
increase knowledge on water resources and hydrology
(glaciers, climate change).
• Water Use Efficiency
• Reduction of Physical / Commercial Water Losses
• communication campaigns for care in water use
• Increase of Alternative Water Resources:
• Aquifer Recharge / Treated Wastewater Reuse.
DROUGHT IN THE METROPOLITAN REGION
Río Mapocho en Los Almendros (Q : m3/seg)
• INTEGRATED WATER RESOURCES MANAGEMENT
• Coordination between the various actors Maipo
basin
• Without management by the Company would
have been impossible to maintain El Yeso level
with 6 years of drought
DROUGHT IN THE METROPOLITAN REGION
• Water Efficiency Master Plan 2010-2014 • Treated Wastewater Reuse
• Objective for 2020 : Non Revenue Water • 71,4 % of drinking water produced is
from 28% to 20% . returned to the water cycle
• Discharged water complies quality
• Actions Oriented to:
standards for agricultural irrigation
• Real Losses Reduction (pressure
reduction, active leakage detection,
• Increase of land used for agricultural
district metered areas).
purposes.
• Commercial Losses Reduction
(water meter replacement, fraud
• Aquifer Recharge Projects
detection)
• Implementation of New
• El Rutal Pilot Project (infiltration pond and
Technologies (Idroloc; Aquapred)
observation wells monitoring)
• Project Benefits: • Groundwater Regional Model with
• Efficiency in Water Use for both: emphasis in Aquifer Artificial recharge.
company and customers.
AGUAS ANDINAS NRW (%) 2001-2013
OTHER PROBLEM ASSOCIATED WITH DROUGHT
• TURBIDITY EXTREME EVENTS
• Turbidity Extreme are more frequently
impacting DWTP operation
• Caused by convective rainfall events
in the Central Andes Mountains
• DWTP are able to produce water up
to 4.000 NTU (Nephelometric Turbidity
Unit)
• During the summer of 2013 two
events of extreme occurred and
historic turbidity was registered
reaching 380.000 NTU
• Both events were prolonged in time
causing the closure of plants and the
outage and shortage of population
EXTREME EVENTS MANAGEMENT PLAN
• Infrastructure Investment phase I :
finished
• Increase of Storage Volume:
225.000 m3 .
• Connection between El Yeso
Reservoir and Las Vizcachas
DWTP: Pipe Length 5km.
• Rehabilitation of Existing
Groundwater Wells: 500 lt/s
• increase from 4 to 9 hours of
continuous supply
• 60 MM dollars
• Infrastructure Investment phase II :
In project.
• Raw Water Reservoir (Estanque
Estanques Salida Pirque) : 1.500.000 m3
Complejo Vizcachas
Conducción • Increase from 9 to 32 hours of
Emb. Yeso -
Azulillos continuous supply
• 80 MM dollars .EXTREME EVENTS MANAGEMENT PLAN
Treated water reservoir : 220.000 m3 of capacity
CAYA Aqueduct : Length : 5 km
Capacity : 4 m3/secRESEARCH AND DEVELOPMENT IN THE FIELD OF WATER RESOURCES (R&D)
• Collaboration with Chilean and International Universities for
understanding Maipo basin characteristics
• Increase water resources knowledge.
• Understanding Glacier Contribution to hydrology.
• Climate change impacts.
• Turbidity event predictions
• Carbon and water footprint
• Glaciers (there are 999 aprox. 388 km2)
• Treated Wastewater Reuse
• Climate Change Impacts on Water Supply
• Turbidity Events Analysis and Prediction.
• Electric Storm monitoring.
• Droughts Analysis under climate change scenarios.
• Geological Analysis to determine debris flow critical areas.
• Continuous Maipo Basin monitoring (weather forecasting,
stream flow monitoring)FINAL COMMENTS
DROUGHT HAS AN IMPACT ON WATER MANAGEMENT IN CHILE
AND THE METROPOLITAN AREA
• Actual Scenario: Nowadays we are in the 6th consecutive drought year
(no similar scenario has being reported previously).
• It is expected more intense impacts in the medium and long term (more
frequency in multiyear drought periods).
AGUAS ANDINAS IS IMPLEMENTING A STRATEGY TO ADAPT AND MITIGATE THE EFFECTS OF
DROUGHT AND CLIMATE CHANGE:
• Ensure water supply to population within the operational area (despite the extension of the current drought
scenario, water supply has not been affected).
• Adaptation plan includes infrastructure and actions to reduce the impact:
• Increase of drinking water storage.
• Increase of raw water storage.
• Increase water use efficiency.
• Rehabilitation of groundwater wells and treatment.
• Coordinated Management of water resources with other users.
• Decrease of carbon footprint.
• Improve water resources monitoring
• Contribute to scientific knowledge through water resources studies in collaboration with universitiesOBJETIVO SUPERIOR : DAR PLENA VIDA A LOS HABITANTES DE SANTIAGO
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