IRAM certifica que:

AGUA Y SANEAMIENTOS ARGENTINaS S.A. - AYSA S.A.

posee un Sistema de Gestion de la Calidad que cumple can los requisitos de la norma:

"1(;:!Net -ll£ lNTERMA.1'IONAL canFlCATlON NET'M)RI(

-_.__._._.0-OAA"-=

Certificado de Registro N°: 9000-4516 II Esle certificado es valida siempre que laorganizacion manlenga en operacion, en

Desde: 30/01/2018 condiciones salisfaclorias, su Sislema deVigencia Geslion de la Calidad y que cumpla can el

Hasta: 25/01/2021 Acuerdo de Certificacion DC-R 010 Y el

SISTEMAS Procedimienlo DC-PG 096.Emisi6n: 16/02/2018 DEGESTl6N

IRAM I Peru 552/6 ICl 068AAB I Buenos Aires.RepublicaArgentina I certiflcacion@iram.org.ar Iwww.iram.org.ar

Servicio de compra de bienes, servicios y contrataci6n de obras de mejora ymantenimiento. Planificaci6n y distribuci6n de materiales de linea para AySA S.A.

Cuyo alcance es:

IRAM -ISO 9001:2015

Tucuman 752 P. 14 - (C1049AAP) - Ciudad Autonoma de Buenos Aires - Republica ArgentinaAv. Varela 1835 - (C1406ELK) - Ciudad Autonoma de Buenos Aires - Republica Argentinaz

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THE INTERNATIONAL CERTIFICATION NETWORK

CERTIFICATE!RAM has issued an IQNet recognized certificate that the organization:

AGUA Y SANEAMIENTOSARGENTINOS S.A. - AYSA S.A.Tucumcin 752 P. 14 - (C1049AAP) - Ciudad Autonoma de Buenos Aires - RepUblica ArgentinaAv. Varela 1835 - (C1406ELK) - Ciudad Autonoma de Buenos Aires - RepUblica Argentina

has implemented and maintains a

Quality Management System

for the following scope:

Procurement 0/ assets, sennces and general works. Planning and delivery 0/supply line material/or AySA S.A.

which fulfils the requirements of the following standard:

ISO 9001:2015

Issued on: 30/01/2018Expires on: 25/01/2021

This attestation is directly linked to the IQNet Partner's original certificate and shall not be used asa stand-alone document

Registration Number: AR - QS4516

Alex StoichitoiuPresident of IQNet

Ing.~riCertification Director lRAM

In.tltulo Argentinod. Normallz.c16rty Certlflc.cl6n

IQNet Partners*:AENOR Spain AFNOR Certification France APCER Portugal CCC Cyprus CISQ Italy

CQC China CQM China CQS Czech Republic Cro Cert Croatia DQS Holding GmbH Germany FCAV BrazilFONDONORMA Venezuela ICONTEC Colombia Inspecta Sertifiointi Oy Finland INTECO Costa Rica

IRAMArgentina JQA Japan KFQ Korea MIRTEC Greece MSZT Hungary Nemko AS Non.uay NSAI IrelandNYCE-8IGE Mexico PCBC Poland Quality Austria Austria RR Russia SII Israel SIQ Slovenia

SIRIM QAS International Malaysia SQS Switzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS SerbialQNet is represented in the USAby: AFNORCertification, CISQ, DQS Holding GmbH and NSAIInc.

• The list of IQNet partners is valid at the time of issue of this certificate. Updated information is available under www.iqnet-certification.com