Exhibit 32
 
CERTIFICATION OF CEO AND CFO
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002
 
Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended March 31, 2023 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934 and that the information contained in this Report fairly presents, in all material respects, the financial condition and results of operations of California Water Service Group.
 
Date: April 28, 2023By:/s/ Martin A. Kropelnicki
  MARTIN A. KROPELNICKI
  President and Chief Executive Officer
  California Water Service Group
  
Date: April 28, 2023By:/s/ Thomas F. Smegal III
  THOMAS F. SMEGAL III
  Vice President, Chief Financial Officer and Treasurer
  California Water Service Group