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2013  
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 2Q13
06/17/2013 2013 Reference Form *
06/17/2013 Minutes of the Extraordinary Shareholders´ Meeting*
06/12/2013 By-Laws
06/11/2013 Operating Release - May 2013
06/07/2013 CVM 358 - May 2013*
06/03/2013 Call Notice of Extraordinary Shareholders´ Meeting
05/29/2013 Call Notice of Extraordinary Shareholders´ Meeting
05/29/2013 Company’s Management related to the matters of the agenda of the Extraordinary Shareholders’ Meeting
05/28/2013 Minutes of the Extraordinary Shareholders´ Meeting
05/22/2013 2013 Calendar of Events
05/21/2013 Notice to the Market - Alteration in the Corporate Events Calendar*
05/17/2013 Management´s Proposal related to the matters of the agenda of the Extraordinary Shareholders’ Meeting
05/17/2013 Minutes of the Board of Directors´ Meeting*
05/13/2013 APIMEC Presentation - 05/13*
05/13/2013 Operating Release - April 2013
05/10/2013 1Q13 ITR
05/10/2013 Call Notice of Extraordinary Shareholders´ Meeting
05/10/2013 Minutes of the Fiscal Council Meeting *
05/09/2013 APIMEC Presentation - 05/09*
05/08/2013 Presentation 1Q13
05/07/2013 1Q13 Earnings Release
05/07/2013 1Q13 Earnings Release Spreadsheets
05/07/2013 1Q13 Earnings Results Conference Call Transcript
05/07/2013 1Q13 Fact Sheet
05/07/2013 1Q13 Results
05/06/2013 CVM 358 - April 2013*
05/02/2013 2012 Reference Form *
04/30/2013 Notice to the Market - IOE 1Q13 payment
04/29/2013 Investor Presentation - April, 2013*
04/26/2013 2012 Annual Report - PDF Version
04/22/2013 1Q13 Earnings Release Schedule
04/19/2013 Minutes of the Board of Directors´ Meeting*
04/15/2013 Minutes of the Fiscal Council Meeting *
04/12/2013 Material Fact - Tariff adjustment
04/11/2013 Minutes of the Ordinary and Extraordinary Shareholders´ Meeting *
04/11/2013 Notice to the Market - IOE 4Q12 payment
04/11/2013 Summary of the Minutes of the Ordinary and Extraordinary Shareholders´ Meeting *
04/10/2013 Operating Release - March 2013
04/08/2013 Notice to the Market - Increase of relevant interest UBS
04/05/2013 CVM 358 - March 2013*
04/03/2013 Notice to the Market - Replacement of the Independent Auditor
 1Q13
03/27/2013 Presentation 4Q12
03/25/2013 Notice to the Market - Reduction of Equity Interest UBS
03/20/2013 Material Fact - "Água da Gente" Program
03/20/2013 Presentation - "Água da Gente" Program
03/19/2013 Minutes of the Board of Directors´ Meeting *
03/19/2013 Minutes of the Fiscal Council Meeting *
03/18/2013 Notice to the Market - Dividends Distribution
03/18/2013 Notice to the Market - Increase of relevant interest UBS
03/12/2013 2012 Financial Statements
03/12/2013 Call Notice of Ordinary and Extraordinary Shareholders´ Meeting
03/12/2013 Company’s Management related to the matters of the agenda of the Extraordinary Shareholders’ Meeting
03/12/2013 Notice to Shareholders
03/12/2013 Notice to the Market - Reduction of Equity Interest UBS
03/11/2013 Operating Release - February 2013
03/11/2013 Press Release - Apimec 2013 *
03/08/2013 4Q12 Fact Sheet
03/07/2013 4Q12 Earnings Results Conference Call Transcript
03/07/2013 4Q12 Results
03/07/2013 CVM 358 - February 2013*
03/04/2013 Moody´s Report - March/2013
03/04/2013 Notice to the Market - Ratings
03/04/2013 Notice to the Market - Tariff Adjustment Request
02/27/2013 2012 Annual Social Balance Sheet
02/26/2013 4Q12 Earnings Release Presentation
02/26/2013 APIMEC Presentation - 03/14*
02/25/2013 4Q12 Earnings Release
02/25/2013 4Q12 Earnings Release Spreadsheets
02/25/2013 4Q12 Results
02/25/2013 DFP 2012 *
02/22/2013 Minutes of the Board of Directors´ Meeting *
02/21/2013 Minutes of the Fiscal Council Meeting *
02/18/2013 Minutes of the Extraordinary Shareholders´ Meeting
02/18/2013 Operating Release - January 2013
02/01/2013 CVM 358 - January 2013*
01/29/2013 4Q12 Earnings Release Schedule
01/29/2013 Minutes of the Board of Directors´ Meeting *
01/26/2013 Call Notice of Extraordinary Shareholders´ Meeting
01/26/2013 Company’s Management related to the matters of the agenda of the Extraordinary Shareholders’ Meeting
01/17/2013 Investor Presentation - January, 2013
01/11/2013 Minutes of the Board of Directors´ Meeting *
01/11/2013 Operating Release - December 2012
01/08/2013 Company Registration Form 2013 *
01/02/2013 CVM 358 - December 2012 *

(*) Information available in Portuguese only.

Last Update on June 18, 2013