EX-32.2 7 scwo_ex322.htm CERTIFICATION

EXHIBIT 32.2

CERTIFICATION OF PRINCIPAL EXECUTIVEOFFICER AND PRINCIPAL FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Form 10-Q of 374Water Inc. for 374Water Inc., (the “Company”) for the period ended June 30, 2025, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Russell Kline, Chief Financial Officer, of the Company certify pursuant to 18 U.S.C. section 1350 of the Sarbanes-Oxley Act of 2002 that:

(1) | The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2) | The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: August 12, 2025

By: | /s/ Russell Kline |
| Chief Financial Officer |

A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.