FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Sullivan Linda G   2. Issuer Name and Ticker or Trading Symbol American Water Works Company, Inc. [AWK] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP and CFO (Last) (First) (Middle) 1025 LAUREL OAK ROAD 3. Date of Earliest Transaction (Month/Day/Year) 01/25/2018 (Street) VOORHEES, NJ 08043 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 01/25/2018   M   4,947 A $ 0 25,428 D   Common Stock 01/25/2018   A   3,747 (1) A $ 0 29,175 D   Common Stock 01/25/2018   F   2,979 D $ 84.53 26,196 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Performance Stock Units

(2)

01/25/2018

A

2,121 (3)

(2)

12/31/2017(4)

Common Stock

2,121 (3)

$ 0

4,947

D

Performance Stock Units

(2)

01/25/2018

M

4,947 (5)

(2)

12/31/2017(4)

Common Stock

4,947 (5)

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Sullivan Linda G 1025 LAUREL OAK ROAD VOORHEES, NJ 08043			EVP and CFO

Signatures

/s/ Jeffrey M. Taylor, as attorney-in-fact for Linda G. Sullivan		01/29/2018
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents shares vested pursuant to an award of performance stock units (PSUs) granted in February 2015 under the American Water Works Company, Inc. 2007 Omnibus Equity Compensation Plan (the "Plan"). This award vested on January 25, 2018. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).
(2)	Each PSU represented a contingent right to receive one share of Company common stock, based in part on the Company's annual relative total stockholder return over a three-year performance period, beginning on January 1, 2015 and ending December 31, 2017.
(3)	Represents the above-target earned portion of the TSR performance stock unit. In 2015, the Company granted 2,826 PSUs under the Plan, equal to the number of shares to be received if target performance was achieved.
(4)	Represents the end of the performance period to which the PSUs relate. This award vested on January 25, 2018.
(5)	Represents the earned portion of the TSR performance stock units, including target units granted in 2015 and above-target units earned based on TSR performance. The number of TSR performance stock units earned was 175 percent of the target.

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