The following chart shows the funding lines, with the respective interest rates, maturities and outstanding balances as of december 2025:

Debt – Funding Lines
Consolidated Data1 (BRL Million)
Index + Fixed Rate (Annual) Issue Date Maturity Date Outstanding Balance
(BRL Thousand)
Percentage
of the Total5
In National Currency:
FGTS Funds 2 TR + 7.30% to TR + 8.50% 08.16.2009 01.16.2043 705,098 9.24%
Caixa Debentures – 5th Issue TR + 9.00% 09.20.2011 09.01.2031 101,274 1.33%
BNDES Debentures – 8th Issue
1st Series TJLP + 1.87% 06.15.2015 06.15.2028 24,204 0.32%
2nd Series IPCA + 8.18% 06.15.2015 06.15.2028 16,497 0.22%
BNDES Debentures – 11th Issue
1st Series TJLP + 2.62% 01.15.2017 01.15.2031 75,074 0.98%
2nd Series IPCA + 8.85% 01.15.2017 01.15.2031 45,772 0.60%
Market Debentures – 12th Issue
2nd Series IPCA + 5.2737% 01.15.2018 01.15.2026 15,457 0.20%
Market Debentures – 14th Issue
2nd Series IPCA + 4.30% 06.15.2019 06.15.2026 25,255 0.33%
Market Debentures – 16th Issue
1st Series IPCA + 5.2306% 09.15.2021 09.15.2031 231,857 3.04%
2nd Series CDI + 1.30% 09.15.2021 09.15.2026 117,590 1.54%
Market Debentures – 17th Issue
Single Series CDI + 1.30% 12.16.2022 12.16.2029 710,147 9.31%
Market Debentures – 18th Issue
1st Series CDI + 1.20% 09.15.2023 09.16.2030 114,377 1.50%
2nd Series IPCA + 7.10% 09.15.2023 09.16.2030 869,814 11.40%
Market Debentures – 19th Issue
1st Series CDI + 0.9% 07.15.2024 07.15.2034 497,224 6.52%
2nd Series IPCA + 7.2735% 07.15.2024 07.15.2034 882,192 11.56%
Market Debentures – 20th Issue
1st Series CDI + 0.60% 05.15.2025 05.15.2035 419,167 5.49%
2nd Series IPCA + 8.21% 05.15.2025 05.15.2035 499,184 6.54%
Market Debentures – 21st Issue
1st Series CDI + 0.52% 10.15.2025 10.15.2035 307,467 4.03%
2nd Series IPCA + 8.33% 10.15.2025 10.15.2035 304,816 3.99%
In Foreign Currency 3 4:
KfW Euro + 1.41% 12.13.2018 05.15.2034 337,629 4.42%
BEI Euro + Euribor + 0.55% 12.13.2019 09.20.2033 586,511 7.69%
AFD Euro + Euribor + 2.69% 12.29.2023 12.20.2043 745,095 9.76%
(-) Issuance Costs of Securities (49,667)
(=) Total Loans, Financing and Debentures 7,582,035
(+) Leasing Liabilities 96,992
(+) Derivative Liabilities 3,880
(=) Total Gross Debt (Short + Long Term) 7,682,907
(-) Cash and Cash Equivalents and Marketable Securities (815,033)
(=) Net Debt 6,867,874

(1) The data refers to the Parent Company and its wholly owned subsidiaries, Patos Saneamento and COPANOR.
(2) FGTS Funds: Brazilian Savings Bank.
(3) Foreign-currency contracts are also subject to an availability rate (0.25% p.y.) on the balance disbursable.
(4) Debts contracted in Euro, whose exchange rate in relation to the Real was R$6.4692 on 12.31.2025.
(5) The calculation of the representativeness of debt by index is carried out before the deferral of the funding cost.

To access the Indebtedness history in Excel, access the Interactive Spreadsheet.

 

SUSTAINABILITY LOAN AND BLUE LOAN

The Company has been recognized as Sustainability Loan (“Sustainability Loan”) and “Blue Loan” (“Blue Loan”) referring to the €200.0 million financing along with the French Development Agency (AFD).

To access the Independent Report, click here (portuguese only).