Exhibit 99.4

American Water Capital Corp.

Offer to Exchange

6.085% Senior Notes Due 2017	6.593% Senior Notes Due 2037
For a Like Principal Amount of New	For a Like Principal Amount of New
6.085% Senior Notes Due 2017	6.593% Senior Notes Due 2037

Pursuant to the Prospectus dated                 , 2008

To: Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees:

American Water Capital Corp., a Delaware corporation (the “Company”), hereby offers to exchange (the “Exchange Offer”), upon and subject to the terms and conditions set forth in the prospectus dated                 , 2008 (the “Prospectus”) and the enclosed letter of transmittal (the “Letter of Transmittal”), up to (i) $750,000,000 aggregate principal amount of new 6.085% Senior Notes due 2017 (the “New 2017 Senior Notes”), for the outstanding 6.085% Senior Notes due 2017, which have certain transfer restrictions (the “Original 2017 Senior Notes”) and (ii) $750,000,000 aggregate principal amount of new 6.593% Senior Notes due 2037 (the “New 2037 Senior Notes” and, together with the New 2017 Senior Notes, the “New Notes”), for the outstanding 6.593% Senior Notes due 2037, which have certain transfer restrictions (the “Original 2037 Senior Notes” and, together with the Original 2017 Senior Notes, the “Original Notes”). The Exchange Offer is intended to satisfy certain obligations of the Company contained in the Exchange and Registration Rights Agreement dated as of October 22, 2007, between the Company, American Water Works Company, Inc. and Citigroup Global Markets Inc, Credit Suisse Securities (USA) LLC, Goldman, Sachs & Co. and Merrill Lynch, Pierce, Fenner & Smith Incorporated, as representatives of the several initial purchasers of the Original Notes.

We are requesting that you contact your clients for whom you hold Original Notes regarding the Exchange Offer. For your information and for forwarding to your clients for whom you hold Original Notes registered in your name or in the name of your nominee, or who hold Original Notes registered in their own names, we are enclosing the following documents:

1. Prospectus, dated                 , 2008;

2. The Letter of Transmittal for your use, for the use of your clients who have either arranged to have the Original Notes registered in their name or obtained a properly completed bond power, and for the information of your other clients;

3. A Notice of Guaranteed Delivery to be used to accept the Exchange Offer if certificates for Original Notes are not immediately available or time will not permit all required documents to reach Wells Fargo Bank, National Association (the “Exchange Agent”) prior to the Expiration Date (as defined below) or if the procedure for book-entry transfer cannot be completed on a timely basis;

4. A Notice of Withdrawal to be used to withdraw tenders of Original Notes;

5. A form of letter which may be sent to your clients for whose account you hold Original Notes registered in your name or the name of your nominee, with space provided for obtaining such clients’ instructions with regard to the Exchange Offer;

6. Guidelines for Certification of Taxpayer Identification Number on Substitute Form W-9; and

7. Return envelopes addressed to Wells Fargo Bank, National Association, the Exchange Agent for the Original Notes.

Your prompt action is requested. The Exchange Offer will expire at 5:00 p.m., New York City time, on                 , 2008 (the “Expiration Date”), unless extended by the Company. Any Original Notes tendered pursuant to the Exchange Offer may be withdrawn at any time before 5:00 p.m., New York City time, on the Expiration Date.

To participate in the Exchange Offer, a duly executed and properly completed Letter of Transmittal (or facsimile thereof or a message from The Depository Trust Company stating that the tendering holder has expressly acknowledged receipt of, and agreement to be bound by and held accountable under, the Letter of Transmittal), with any required signature guarantees and any other required documents, must be sent to the Exchange Agent and certificates representing the Original Notes must be delivered to the Exchange Agent, all in accordance with the instructions set forth in the Letter of Transmittal and the Prospectus.

If holders of Original Notes wish to tender, but it is impracticable for them to forward their certificates for Original Notes prior to the expiration of the Exchange Offer or to comply with the book-entry transfer procedures on a timely basis, a tender may be effected by following the guaranteed delivery procedures described in the Prospectus under “The Exchange Offer—Guaranteed Delivery Procedures.”

Any inquiries you may have with respect to the Exchange Offer or requests for additional copies of the enclosed materials should be directed to the Exchange Agent for the Original Notes, at its address and telephone number set forth on the front of the Letter of Transmittal.

Very truly yours,

American Water Capital Corp.

NOTHING HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU OR ANY OTHER PERSON AS AN AGENT OF THE COMPANY OR THE EXCHANGE AGENT, OR AUTHORIZE YOU OR ANY OTHER PERSON TO USE ANY DOCUMENT OR MAKE ANY STATEMENTS ON BEHALF OF EITHER OF THEM WITH RESPECT TO THE EXCHANGE OFFER, EXCEPT FOR STATEMENTS EXPRESSLY MADE IN THE PROSPECTUS OR THE LETTER OF TRANSMITTAL.