Conclusion of Ordinary Tax Audit for Fiscal year 2020 and Tax Certificate Issuance

ATHENS WATER SUPPLY & SEWAGE Co.

Conclusion of Ordinary Tax Audit for Fiscal year 2020 and Tax Certificate Issuance

Athens, November 23^rd, 2021

Conclusion of Ordinary Tax Audit for Fiscal year 2020 and

Tax Certificate Issuance

EYDAP S.A., in accordance with paragraph 4.1.3.1. of the Athens Exchange Regulation, informs the investment community that the ordinary tax audit which was conducted by the Statutory Auditor - Accountant for fiscal year 2020, was finalized and as a result, a tax certificate was issued without reservation, with emphasis on a question to the Independent Public Revenue Authority, regarding the obligation to register property rights in the Company's Property Statement (E9).