Belém Sewage Treatment Plant – Curitiba, Paraná, BrazilDebentures and Other ProspectusesInvestor RelationsFinancial InformationDebentures and Other Prospectuses20242023201712/19/2023Material Fact - Board of Directors approval of the 14th Issuance of Debentures04/25/2023Notice to the Market - Result of the Bookbuilding Procedure of the 13th Issue of Debentures04/05/2023Material Fact - Board of Directors approval of the 13th Issuance of DebenturesFinancial InformationResults CenterQuotes and ChartsDebentures and Other ProspectusesReports of FiduciariesDividends and JCPRatings and Valuation ReportsEarnings Spreadsheets