Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
HORNE TIMOTHY P
   2. Issuer Name and Ticker or Trading Symbol
WATTS WATER TECHNOLOGIES INC [WTS] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O WATTS WATER TECHNOLOGIES, INC., 815 CHESTNUT STREET		 3. Date of Earliest Transaction (Month/Day/Year)
02/28/2006
(Street)

NORTH ANDOVER, MA 01845		 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
Class A Common Stock 02/28/2006   C   50,000 A $ 0 (1) 50,400 D  
Class A Common Stock               61,300 I By The Daniel W. Horne Trust-1980, The Deborah Horne Trust-1976 and The George B. Horne Trust-1982 (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Class B Common Stock (3) 02/28/2006   C     50,000   (4)   (4) Class A Common Stock 50,000 (3) 1,601,220 D  
Class B Common Stock (3)               (4)   (4) Class A Common Stock 5,622,660   5,622,660 I See footnote (5)

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
HORNE TIMOTHY P
C/O WATTS WATER TECHNOLOGIES, INC.
815 CHESTNUT STREET
NORTH ANDOVER, MA 01845		   X   X    

Signatures

 Kenneth R. Lepage - Attorney-in-Fact   02/28/2006
**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) The shares of Class A Common Stock were issued pursuant to the conversion on a 1-for-1 basis of shares of Class B Common Stock.
(2) The Reporting Person indirectly owns 4,825 shares of Class A Common Stock held by The Daniel W. Horne Trust-1980, 6,475 shares of Class A Common Stock held by the Deborah Horne Trust-1976 and 50,000 shares of Class A Common Stock held by the George B. Horne Trust-1982. The Reporting Person serves as Trustee of each of these trusts.
(3) Shares of Class B Common Stock are convertible into shares of Class A Common Stock on a 1-for-1 basis.
(4) All shares of Class B Common Stock were convertible into Class A Common Stock upon issuance and do not have an expiration date.
(5) Consists of the following shares of Class B Common Stock: (i) 1,924,600 shares held for the benefit of George B. Horne under a trust for which the Reporting Person serves as co-trustee, (ii) 1,210,840 shares held for the benefit of Daniel W. Horne under a trust for which the Reporting Person serves as trustee, (iii) 1,210,840 shares held for the benefit of Deborah Horne under a trust for which the Reporting Person serves as trustee, (iv) 1,085,840 shares held for the benefit of Peter W. Horne under a trust, which are subject to The Amended and Restated George B. Horne Voting Trust Agreement - 1997 (the "1997 Voting Trust") for which the Reporting Person serves as trustee, (v) 20,200 and 22,600 shares held for the benefit of Tara V. Horne and Tiffany R. Horne, respectively, under irrevocable trusts for which the Reporting Person serves as trustee, and (vi) 147,740 shares held for the benefit of Tiffany R. Horne under a trust, which are subject to the 1997 Voting Trust.

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