Water-related resilience challenges in

São Paulo Region

Monica PortoSub Secretary for Sanitation and Water Resources

State of São Paulo

SÃO PAULO

STATE

MetropolitanRegion

BRAZIL

METROPOLITAN REGION OF SÃO PAULO,

BRAZIL

Fast Facts aboutSão Paulo Metropolitan Region

• Among the ten largest in the world

• Population: 20.5 million

• 39 municipalities

– São Paulo, state capital, is the largest city (11.6 million)

– Area of 7 000 km2, urbanized area of 2 200 km2

• 19% of the national GDP, 56% of the state GDP

Complexity and Risk

• Concentration of population

• Extension of the urban area

• Several layers are interconnected

• Stress on the natural systems

• Water-related resilience in urban areas refers to drought andflood management

How water is used in São Paulo?• In the State of São Paulo:

– Domestic: 45%

– Industrial: 23%

– Irrigation: 27%

– Other: 5%

• In the Metropolitan Region:

– Domestic: 61%

– Industrial: 16%

– Irrigation: 1.5%

– Other: 21.5% (mostly hydropower)

São Paulo

Upper Tiete RiverWatershed Limit

GUARAPIRANGA

BAIXO COTIA

ALTO COTIA RIB. ESTIVA

RIO GRANDE(BILLINGS)

RIO CLARO

ALTO TIETÊ

CANTAREIRA

Main Water Supply Systems ofthe Metropolitan Region of São Paulo

MRSP Limit20 million

people

Water Supply System FEB/14* JAN/16 DIFF.

Cantareira 31,77 15,77 -16,00

Guarapiranga 13,77 15,12 +1,35

Alto Tietê 14,97 13,28 -1,69

Rio Grande 4,94 5,16 +0,22

Rio Claro 3,83 4,00 +0,17

Alto Cotia 1,16 1,25 +0,09

Baixo Cotia 0,88 0,95 +0,07

Ribeirão Estiva 0,10 0,08 -0,02

TOTAL RMSP 71,42 55,61 -15,81

DRINKING WATER PRODUCTION

* February/ 2014: last month with normal production

-

10

20

30

40

50

60

70

Jan Fev Mar Abr Mai Jun Jul Ago Set Out Nov Dez

2013-2014 Drought in the Cantareira System

Infl

ow

(m3/s

) MeanInflow

1953

2014

Difference in inflow volume

between 1953 and 2014: 372

million m3

(38% of the storage)

month

How to copewith thedrought?Discount/ Overchrage

Program

Dead storage use289 million m3

Intertransfers betweenwater supply systems

Pressure reduction in all pipelines

5,4 m³/s from Guarapiranga and Alto Tietê systems

3,2 million people beganbeing supplied by other

systems

Reduction of 10 m³/s

Reduction of 6 m³/s

60%

6% 5%10%

19%

>20%

entre 15 e 20%

entre 10 e 15%

<10%

aumentou

. Time to fix leaks: 36 to 17 hours

. 44% of the network with PRV

. More than 4.000 km/ month were monitoredto detect leaks. More than 15.000 connection units/ monthwere replaced.More than 3.000 leakage repairs/month

REDUNDANCY ROBUSTNESS

ECONOMICINSTRUMENTS

EFFICIENCY

Increasing resilience in urban water management

• Reducing the threat: increase security levels and improve robustness

• Reducing the exposure: demand management, land use management

• Reducing the vulnerability: redundancy, adaptation

For the long term (2050)

• Water security is

definitely an issue

• Robust structural

measures are

needed

• New diversions,

probably

For SUSTAINABILITY

• Demand management

• Improved tariff

management

• Reduction of water

losses

• Water reuse

• .....

Lessons and research opportunities learnedwith drought in the State of São Paulo

• Information, information, information;

• Governance: management instruments must be prepared to deal with extreme situations;

• Demand management is important, its implementation requires important investments;

• Water systems must be robust (investment in infrastructure);

• Redundancy is essential even though it usually means more investment.

The governance becomes more complexInvestments increase

Decision process is difficult and information is key

Obrigado

Thank you

Incentives to reduce water useDiscount (onus) x Overcharge (bonus)

Intertransfers between systems

Região Metropolitana de São Paulo

Cantareira

Alto Tietê

GuarapirangaRio Claro / Rio Grande

2156

1512

453

1300

SPAT

VRP

AVANÇOS

Municípios

Bônus

-459

3489

-1300

vrp

avanço

bônus

-174

-852

2.717

red. Sto. André

red. S. Bernardo/ Diadema

avanço

6627

3400

7717

843

VRP

BÔNUS

Transferências

Guarulhos/SCS