UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

Current Report Pursuant to Section 13 or 15(d) of

The Securities Exchange Act of 1934

Date of Report (date of earliest event reported): September 2, 2016

CALIFORNIA WATER SERVICE GROUP

(Exact name of Registrant as Specified in its Charter)

(408) 367-8200

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o                                    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o                                    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o                                    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o                                    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.                                        OTHER EVENTS.

On September 6, 2016, California Water Service Group (the “Company”) issued a press release announcing California Water Service Company (Cal Water), the largest subsidiary of the Company, formally filed a settlement agreement  to its 2015 General Rate Case on Friday, September 2.

The press release in the form attached as Exhibit 99.1 corrects three errors in the press release published on September 6, 2016:  Under the terms of the settlement, Cal Water would be authorized to increase rates in 2017, 2018, and 2019 (instead of 2016, 2017, and 2018) and increase gross revenue by approximately $16.3 million in 2019 (instead of $17.2 million). The proposed 7.5% revenue increase is in 2017 (instead of 2016). A copy of the revised press release is attached hereto as Exhibit 99.1 and incorporated by reference herein.

Item 9.01.                                        FINANCIAL STATEMENTS AND EXHIBITS.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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