Exhibit (a)(1)(ii)

        LETTER OF TRANSMITTAL

To Tender Shares of Common Stock
of

SJW GROUP

Pursuant to the Offer to Purchase
dated June 7, 2018
of
WALTZ ACQUISITION SUB, INC.
a wholly owned subsidiary of
CALIFORNIA WATER SERVICE GROUP

        Mail or deliver this Letter of Transmittal, together with the certificate(s) representing your shares, to the Depositary for this Offer:

        ALL QUESTIONS REGARDING THE OFFER SHOULD BE DIRECTED TO THE INFORMATION AGENT, INNISFREE M&A INCORPORATED, AT ITS ADDRESS AND TELEPHONE NUMBER AS SET FORTH ON THE BACK COVER PAGE OF THE OFFER TO PURCHASE.

        DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET FORTH ABOVE FOR THE DEPOSITARY WILL NOT CONSTITUTE A VALID DELIVERY.

        THIS LETTER OF TRANSMITTAL AND THE INSTRUCTIONS ACCOMPANYING THIS LETTER OF TRANSMITTAL SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF TRANSMITTAL IS COMPLETED.

        THE UNDERSIGNED TENDERS ALL UNCERTIFICATED SHARES THAT MAY BE HELD IN THE NAME OF THE REGISTERED HOLDER(S) BY THE TRANSFER AGENT.

o    YES

o    NO

        Note: If you do not check either of the boxes above, uncertificated Shares, if any, held in the name of the registered holder(s) by the transfer agent will not be tendered.

        This Letter of Transmittal is to be used if certificates are to be forwarded herewith or, unless an Agent's Message (as defined in the Offer to Purchase) is utilized, if delivery of Shares (as defined below) is to be made by book-entry transfer to the Depositary's account at The Depository Trust Company (the "Book-Entry Transfer Facility"), pursuant to the procedures set forth in Section 3 of the Offer to Purchase.

        Holders of outstanding shares of common stock, par value $0.001 per share (the "Shares"), of SJW Group, whose certificates for such Shares are not immediately available or who cannot deliver such certificates and all other required documents to the Depositary on or prior to the expiration of the offer, or who cannot complete the procedure for book-entry transfer on a timely basis, must tender their Shares according to the guaranteed delivery procedure set forth in Section 3 of the Offer to Purchase. See Instruction 2. Delivery of documents to the Book-Entry Transfer Facility does not constitute delivery to the Depositary.

NOTE: SIGNATURES MUST BE PROVIDED BELOW
PLEASE READ ACCOMPANYING INSTRUCTIONS CAREFULLY

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Ladies and Gentlemen:

        The undersigned hereby tenders to Waltz Acquisition Sub, Inc. (the "Purchaser"), a wholly owned subsidiary of California Water Service Group ("California Water"), the above-described shares of common stock, par value $0.001 per share (the "Shares"), of SJW Group ("SJW"), pursuant to the Purchaser's offer to purchase all outstanding Shares at a price of $68.25 per Share, net to the seller in cash, without interest and less any required withholding taxes, upon the terms and subject to the conditions set forth in the Offer to Purchase dated June 7, 2018, receipt of which is hereby acknowledged, and in this Letter of Transmittal (which, together with any amendments or supplements thereto, collectively constitute the "Offer"). The Offer expires at 5:00 P.M., New York City time, on August 3, 2018, unless extended as described in the Offer to Purchase (as extended, the "Expiration Date"). The Purchaser reserves the right to transfer or assign, in whole or in part, from time to time, to one or more of its affiliates the right to purchase Shares tendered pursuant to the Offer, but any such transfer or assignment will not relieve the Purchaser of its obligations under the Offer or prejudice your rights to receive payment for Shares validly tendered and accepted for payment.

        Upon the terms and subject to the conditions of the Offer and effective upon acceptance for payment of and payment for the Shares tendered herewith, the undersigned hereby sells, assigns and transfers to, or upon the order of, the Purchaser all right, title and interest in and to all the Shares that are being tendered hereby (and any and all other Shares or other securities issued or issuable in respect thereof on or after the commencement of the Offer) and appoints the Purchaser the true and lawful agent and attorney-in-fact of the undersigned with respect to such Shares (and all such other Shares or securities), with full power of substitution (such power of attorney being deemed to be an irrevocable power coupled with an interest), to (i) deliver certificates for such Shares (and all such other Shares or securities), or transfer ownership of such Shares (and all such other Shares or securities) on the account books maintained by The Depository Trust Company (the "Book-Entry Transfer Facility"), together, in any such case, with all accompanying evidences of transfer and authenticity, to or upon the order of the Purchaser, (ii) present such Shares (and all such other Shares or securities) for transfer on the books of SJW, and (iii) receive all benefits and otherwise exercise all rights of beneficial ownership of such Shares (and all such other Shares or securities), all in accordance with the terms of the Offer.

        The undersigned hereby irrevocably appoints the Purchaser and its officers, and each of them, and any other designees of the Purchaser, the attorneys and proxies of the undersigned, each with full power of substitution, to exercise all voting and other rights of the undersigned in such manner as each such attorney and proxy or its, his or her substitute shall in its, his or her sole discretion deem proper, with respect to all of the Shares tendered hereby which have been accepted for payment by the Purchaser prior to the time of any vote or other action (and any and all other Shares or other securities issued or issuable in respect thereof on or after the commencement of the Offer), at any meeting of stockholders of SJW (whether annual or special and whether or not an adjourned meeting), or otherwise. This proxy is irrevocable and is granted in consideration of, and is effective upon, the acceptance for payment of such Shares by the Purchaser in accordance with the terms of the Offer. Such acceptance for payment shall revoke any other proxy granted by the undersigned at any time with respect to such Shares (and all such other Shares or securities), and no subsequent proxies will be given by the undersigned (and if given, will not be deemed to be effective). This proxy will be governed by and construed in accordance with the laws of the State of Delaware and applicable federal securities laws.

        The undersigned hereby represents and warrants that the undersigned has full power and authority to tender, sell, assign and transfer the Shares tendered herein (and any and all other Shares or other securities issued or issuable in respect thereof on or after the commencement of the Offer) and that when the same are accepted for payment by the Purchaser, the Purchaser will acquire good and

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unencumbered title thereto, free and clear of all liens, restrictions, charges and encumbrances and not subject to any adverse claims.

        The undersigned will, upon request, execute and deliver any additional documents deemed by the Depositary or the Purchaser to be necessary or desirable to complete the sale, assignment and transfer of the Shares tendered hereby (and all such other Shares or securities).

        All authority herein conferred or agreed to be conferred shall survive the death or incapacity of the undersigned, and any obligation of the undersigned hereunder shall be binding upon the heirs, personal representatives, successors and assigns of the undersigned. Except as stated in the Offer, this tender is irrevocable.

        The undersigned understands that tenders of Shares pursuant to any one of the procedures described in Section 3 of the Offer to Purchase and in the instructions hereto will constitute an agreement between the undersigned and the Purchaser upon the terms and subject to the conditions of the Offer.

        Unless otherwise indicated under "Special Payment Instructions," please issue the check for the purchase price of any Shares purchased, and return any Shares not tendered or not purchased, in the name(s) of the undersigned (and, in the case of Shares tendered by book-entry transfer, by credit to the account at the Book-Entry Transfer Facility). Similarly, unless otherwise indicated under "Special Delivery Instructions," please mail the check for the purchase price of any Shares purchased and any certificates for Shares not tendered or not purchased (and accompanying documents, as appropriate) to the undersigned at the address shown below the undersigned's signature(s). In the event that both "Special Payment Instructions" and "Special Delivery Instructions" are completed, please issue the check for the purchase price of any Shares purchased and return any Shares not tendered or not purchased in the name(s) of, and mail said check and any certificates to, the person(s) so indicated. The undersigned recognizes that the Purchaser has no obligation, pursuant to the "Special Payment Instructions," to transfer any Shares from the name of the registered holder(s) thereof if the Purchaser does not accept for payment any of the Shares so tendered.

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IMPORTANT TAX INFORMATION

        To prevent backup withholding on payments that are made to a stockholder that is a United States person (as defined for U.S. federal income tax purposes) with respect to Shares purchased pursuant to the Offer, the stockholder is required to timely provide the Depositary with the stockholder's correct taxpayer identification number ("TIN") by completing the Internal Revenue Service ("IRS") Form W-9 included in this Letter of Transmittal and to certify on such IRS Form W-9 that (1) the TIN provided on the IRS Form W-9 is correct, (2) the stockholder is not subject to backup withholding because (i) the stockholder is exempt from backup withholding, (ii) the stockholder has not been notified by the IRS that the stockholder is subject to backup withholding as a result of a failure to report all interest and dividends or (iii) the IRS has notified the stockholder that the stockholder is no longer subject to backup withholding, and (3) the stockholder is a United States person (as defined for U.S. federal income tax purposes). See the section entitled "What Number to Give the Depositary" (below), and the instructions to the IRS Form W-9, for more information on what TIN to provide the Depositary.

        Certain stockholders (including, among others, certain corporations and certain foreign individuals and entities) may not be subject to backup withholding and reporting requirements. In order for an exempt stockholder who is a United States person (as defined for U.S. federal income tax purposes) to prevent possible erroneous backup withholding, such stockholder should provide the "Exempt Payee Code" on the appropriate line in the IRS Form W-9 and sign, date and timely return the IRS Form W-9 to the Depositary. See the instructions to the IRS Form W-9 included in this Letter of Transmittal for additional instructions. In order for an exempt stockholder who is not a United States person (as defined for U.S. federal income tax purposes) to prevent possible erroneous backup withholding, such stockholder should complete, sign and submit an appropriate IRS Form W-8 signed under penalties of perjury, attesting to his, her or its exempt status. An IRS Form W-8 can be obtained from the Depositary or at http://www.irs.gov. Such stockholders should consult a tax advisor to determine which IRS Form W-8 is appropriate.

        If backup withholding applies, the Depositary is required to withhold and pay over to the IRS a portion of any payment made to a stockholder. Backup withholding is not an additional tax. Rather, the United States federal income tax liability of persons subject to backup withholding will be reduced by the amount of tax withheld. If backup withholding results in an overpayment of taxes, a refund may be obtained from the IRS if required information is timely furnished to the IRS.

What Number to Give the Depositary

        In general, a tendering stockholder who is a United States person (as defined for U.S. federal income tax purposes) is required to give the Depositary the TIN, generally the Social Security number or employer identification number, of the record holder of all Shares tendered hereby. If such Shares are in more than one name or are not in the name of the actual owner, consult the instructions to the IRS Form W-9 included in this Letter of Transmittal for additional guidance on which number to report. If the Depositary is provided with an incorrect TIN in connection with such payments, then the stockholder may be subject to various penalties imposed by the IRS.

NOTE:

        FAILURE TO COMPLETE AND RETURN THE IRS FORM W-9 INCLUDED IN THIS LETTER OF TRANSMITTAL, OR THE APPLICABLE IRS FORM W-8, AS APPLICABLE, MAY RESULT IN BACKUP WITHHOLDING AT THE APPLICABLE WITHHOLDING RATE OF A PORTION OF ANY PAYMENTS MADE TO YOU PURSUANT TO THE OFFER. PLEASE REVIEW THE INSTRUCTIONS TO THE IRS FORM W-9 INCLUDED IN THIS LETTER OF TRANSMITTAL, OR THE APPLICABLE IRS FORM W-8, AS APPLICABLE, FOR ADDITIONAL DETAILS.

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INSTRUCTIONS
Forming Part of the Terms and Conditions of the Offer

        1.    Guarantee of Signatures.    Except as otherwise provided below, all signatures on this Letter of Transmittal must be guaranteed by a financial institution (including most banks, savings and loan associations and brokerage houses) that is a member of a recognized Medallion Program approved by The Securities Transfer Association, Inc., including the Securities Transfer Agents Medallion Program (STAMP), the Stock Exchange Medallion Program (SEMP) and the New York Stock Exchange Medallion Signature Program (MSP) or any other "eligible guarantor institution" (as such term is defined in Rule 17Ad-15 under the Securities Exchange Act of 1934, as amended) (each an "Eligible Institution"). Signatures on this Letter of Transmittal need not be guaranteed (i) if this Letter of Transmittal is signed by the registered holder(s) of the Shares (which term, for purposes of this document, shall include any participant in the Book-Entry Transfer Facility whose name appears on a security position listing as the owner of Shares) tendered herewith and such holder(s) has not completed the box entitled "Special Payment Instructions" or "Special Delivery Instructions" on this Letter of Transmittal or (ii) if such Shares are tendered for the account of an Eligible Institution. See Instruction 5 and 7.

        2.    Delivery of Letter of Transmittal and Shares.    This Letter of Transmittal is to be used either if certificates are to be forwarded herewith or, unless an Agent's Message is utilized, if delivery of Shares is to be made by book-entry transfer pursuant to the procedures set forth in Section 3 of the Offer to Purchase. Certificates for all physically delivered Shares, or a confirmation of a book-entry transfer into the Depositary's account at the Book-Entry Transfer Facility of all Shares delivered electronically, as well as a properly completed and duly executed Letter of Transmittal (or facsimile thereof or, in the case of a book-entry transfer, an Agent's Message) and any other documents required by this Letter of Transmittal, must be received by the Depositary at one of its addresses set forth on the front page of this Letter of Transmittal by the Expiration Date. Stockholders who cannot deliver their Shares and all other required documents to the Depositary by the Expiration Date must tender their Shares pursuant to the guaranteed delivery procedure set forth in Section 3 of the Offer to Purchase. Pursuant to such procedure: (i) such tender must be made by or through an Eligible Institution, (ii) a properly completed and duly executed Notice of Guaranteed Delivery in the form provided by the Purchaser must be received by the Depositary by the Expiration Date, and (iii) the certificates for all physically delivered Shares, or a confirmation of a book-entry transfer into the Depositary's account at the Book-Entry Transfer Facility of all Shares delivered electronically, as well as a properly completed and duly executed Letter of Transmittal (or facsimile thereof or, in the case of a book-entry delivery, an Agent's Message) and any other documents required by this Letter of Transmittal, must be received by the Depositary within two New York Stock Exchange trading days after the date of execution of such Notice of Guaranteed Delivery, all as provided in Section 3 of the Offer to Purchase.

        The method of delivery of Shares, this Letter of Transmittal and all other required documents, including through the Book-Entry Transfer Facility, is at the sole option and risk of the tendering stockholder, and delivery of the Shares will be deemed made only when actually received by the Depositary (including, in the case of a book-entry transfer, by book-entry confirmation). If certificates for Shares are sent by mail, we recommend registered mail with return receipt requested, properly insured, in time to be received on or prior to the Expiration Date.

        No alternative, conditional or contingent tenders will be accepted, and no fractional Shares will be purchased. By executing this Letter of Transmittal (or facsimile thereof), the tendering stockholder waives any right to receive any notice of the acceptance for payment of the Shares.

        3.    Inadequate Space.    If the space provided herein is inadequate, the certificate numbers and/or the number of Shares should be listed on a separate schedule attached hereto.

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        4.    Partial Tenders (not applicable to stockholders who tender by book-entry transfer).    If fewer than all the Shares represented by any certificate delivered to the Depositary are to be tendered, fill in the number of Shares which are to be tendered in the box entitled "Number of Shares Tendered." In such case, a new certificate for the remainder of the Shares represented by the old certificate will be issued and sent to the person(s) signing this Letter of Transmittal, unless otherwise provided in the boxes entitled "Special Payment Instructions" or "Special Delivery Instructions," as the case may be, on this Letter of Transmittal, as promptly as practicable following the expiration or termination of the Offer. All Shares represented by certificates delivered to the Depositary will be deemed to have been tendered unless otherwise indicated.

        5.    Signatures on Letter of Transmittal; Stock Powers and Endorsements.    If this Letter of Transmittal is signed by the registered holder(s) of the Shares tendered hereby, the signature(s) must correspond with the name(s) as written on the face of the certificates without alteration, enlargement or any change whatsoever.

        If any of the Shares tendered hereby is held of record by two or more persons, all such persons must sign this Letter of Transmittal.

        If any of the Shares tendered hereby are registered in different names on different certificates, it will be necessary to complete, sign and submit as many separate Letters of Transmittal as there are different registrations of certificates.

        If this Letter of Transmittal is signed by the registered holder(s) of the Shares tendered hereby, no endorsements of certificates or separate stock powers are required unless payment of the purchase price is to be made, or Shares not tendered or not purchased are to be returned, in the name of any person other than the registered holder(s). Signatures on any such certificates or stock powers must be guaranteed by an Eligible Institution.

        If this Letter of Transmittal is signed by a person other than the registered holder(s) of the Shares tendered hereby, certificates must be endorsed or accompanied by appropriate stock powers, in either case, signed exactly as the name(s) of the registered holder(s) appear(s) on the certificates for such Shares. Signature(s) on any such certificates or stock powers must be guaranteed by an Eligible Institution.

        If this Letter of Transmittal or any certificate or stock power is signed by a trustee, executor, administrator, guardian, attorney-in-fact, officer of a corporation or other person acting in a fiduciary or representative capacity, such person should so indicate when signing, and proper evidence satisfactory to the Purchaser of the authority of such person so to act must be submitted.

        6.    Stock Transfer Taxes.    The Purchaser will pay any stock transfer taxes with respect to the sale and transfer of any Shares to it or its order pursuant to the Offer. If, however, payment of the purchase price is to be made to, or Shares not tendered or not purchased are to be returned in the name of, any person other than the registered holder(s), or if a transfer tax is imposed for any reason other than the sale or transfer of Shares to the Purchaser pursuant to the Offer, then the amount of any stock transfer taxes (whether imposed on the registered holder(s), such other person or otherwise) will be deducted from the purchase price unless satisfactory evidence of the payment of such taxes, or exemption therefrom, is submitted herewith.

        7.    Special Payment and Delivery Instructions.    If the check for the purchase price of any Shares purchased is to be issued, or any Shares not tendered or not purchased are to be returned, in the name of a person other than the person(s) signing this Letter of Transmittal or if the check or any certificates for Shares not tendered or not purchased are to be mailed to someone other than the person(s) signing this Letter of Transmittal or to the person(s) signing this Letter of Transmittal at an address other than that shown above, the appropriate boxes on this Letter of Transmittal should be completed. Stockholders tendering Shares by book-entry transfer may request that Shares not purchased be

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credited to such account at the Book-Entry Transfer Facility as such stockholder may designate under "Special Payment Instructions." If no such instructions are given, any such Shares not purchased will be returned by crediting the account at the Book-Entry Transfer Facility designated above.

        8.    Tax Information.    Payments made to stockholders pursuant to the Offer may be subject to backup withholding. To avoid backup withholding, each stockholder who is a United States Person (as defined for U.S. federal income tax purposes) must timely provide the Depositary with such stockholder's correct taxpayer identification number by completing the IRS Form W-9 included in this Letter of Transmittal and must certify on such IRS Form W-9 that (1) the TIN provided on the IRS Form W-9 is correct, (2) the stockholder is not subject to backup withholding because (i) the stockholder is exempt from backup withholding, (ii) the stockholder has not been notified by the IRS that the stockholder is subject to backup withholding as a result of a failure to report all interest and dividends or (iii) the IRS has notified the stockholder that the stockholder is no longer subject to backup withholding, and (3) the stockholder is a United States person (as defined for U.S. federal income tax purposes). In general, if a stockholder or payee is an individual, the taxpayer identification number is the social security number of such individual. If the Depositary is not provided with the correct taxpayer identification number, the stockholder or payee may be subject to various penalties imposed by the Internal Revenue Service.

        Certain stockholders or payees (including, among others, certain corporations and certain foreign individuals and entities) are not subject to these backup withholding and reporting requirements. In order to avoid erroneous backup withholding, an exempt stockholder who is a United States Person (as defined for U.S. federal income tax purposes should provide the "Exempt Payee Code" on the appropriate line in the IRS Form W-9 and sign, date and timely return the IRS Form W-9 to the Depositary. See the instructions to the IRS Form W-9 included in this Letter of Transmittal for additional instructions. In order for an exempt stockholder who is not a United States person (as defined for U.S. federal income tax purposes) to prevent possible erroneous backup withholding, such stockholder should complete, sign and submit an appropriate IRS Form W-8 signed under penalties of perjury, attesting to his, her or its exempt status. An IRS Form W-8 can be obtained from the Depositary at http://www.irs.gov.

        Failure to complete the enclosed IRS Form W-9 or applicable IRS Form W-8, as applicable, may require the Depositary to withhold 24% of the amount of any payments made pursuant to the Offer. Backup withholding is not an additional U.S. federal income tax. Rather, the U.S. federal income tax liability of a person subject to backup withholding will be reduced by the amount of tax withheld. If withholding results in an overpayment of taxes, a refund may be obtained provided that the required information is timely furnished to the Internal Revenue Service. We recommend that you consult your own tax advisor for further guidance regarding the completion of the enclosed IRS Form W-9 or an applicable Form W-8 to claim exemption from backup withholding.

        9.    Mutilated, Lost, Stolen or Destroyed Certificates.    If the certificate(s) representing Shares to be tendered have been mutilated, lost, stolen or destroyed, stockholders should (i) complete this Letter of Transmittal and (ii) contact SJW's transfer agent, American Stock Transfer & Trust Company, immediately by calling (800) 937-5449. SJW's transfer agent will provide such holder with all necessary forms and instructions to replace any such mutilated, lost, stolen or destroyed certificates. The stockholder may be required to post a bond as indemnity against any claim that may be made against it with respect to the certificate(s) alleged to have been mutilated, lost, stolen or destroyed. The Depositary will not accept any Letter of Transmittal without the accompanying Shares. SJW stockholders wishing to tender their certificates must first obtain replacement certificates from American Stock Transfer & Trust Company and present such replacement certificates to the Depositary with this Letter of Transmittal.

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        10.    Irregularities.    California Water and Purchaser will interpret the terms and conditions of the Offer (including this Letter of Transmittal and the instructions hereto). All questions as to form of documents and the validity, form, eligibility (including time of receipt) and acceptance for payment of any tender of Shares will be determined by California Water and the Purchaser in their sole discretion. California Water and the Purchaser reserve the absolute right to reject any and all tenders determined by them not to be in proper form or the acceptance for payment of which may, in the opinion of their counsel, be unlawful. California Water and the Purchaser also reserve the absolute right to waive any of the conditions to the Offer to the extent permitted by applicable law and any defect or irregularity in the tender of any Shares of any particular stockholder, whether or not similar defects or irregularities are waived in the case of other stockholders. No tender of Shares will be deemed to have been validly made until all defects and irregularities have been cured or waived to the satisfaction of the Purchaser. Unless waived, any defects or irregularities in connection with tenders must be cured within such time as the Purchaser shall determine. None of the Purchaser, California Water or any of their respective affiliates or assigns, the Depositary, Information Agent, or any other person will be under any duty to give notification of any defects or irregularities in tenders or incur any liability for failure to give any such notification.

        11.    Requests for Assistance or Additional Copies.    Requests for assistance or additional copies of the Offer to Purchase and this Letter of Transmittal may be obtained from the Information Agent at its address or telephone number set forth below.

The Information Agent for the Offer is:

Innisfree M&A Incorporated
501 Madison Avenue, 20th Floor
New York, New York 10022
Stockholders May Call Toll Free: (888) 750-5834
Banks and Brokers May Call Collect: (212) 750-5833

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Exhibit (a)(1)(ii)