As filed with the Securities and Exchange Commission on May 28, 2004
Registration Statement No. 333-__________

SECURITIES AND EXCHANGE COMMISSION
 Washington, D.C. 20549

FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933

WATTS WATER TECHNOLOGIES, INC.
 (Exact name of Registrant as Specified in Its Charter)

       Delaware                                        04-2916536
(State of Incorporation)                (I.R.S. Employer Identification Number)

815 Chestnut Street
North Andover, Massachusetts 01845
(978) 688-1811
(Address, including zip code and telephone number, including area code,
of Registrant's principal executive offices)

WATTS WATER TECHNOLOGIES, INC. 2004 STOCK INCENTIVE PLAN
 (Full Title of the Plan)
 Kenneth R. Lepage, Esq.
Assistant General Counsel
Watts Water Technologies, Inc.
815 Chestnut Street
North Andover, Massachusetts 01845
(978) 688-1811
(Name, address, including zip code and telephone number, including area code,
of agent for service)

With copy to:
Robert P. Whalen, Jr., Esq.
Goodwin Procter LLP
Exchange Place
Boston, Massachusetts 02109-2881
(617) 570-1000
CALCULATION OF REGISTRATION FEE

====================================================================================================================================
                                                                                                   Proposed Maximum
                                                       Amount to be     Proposed Maximum Offering     Aggregate         Amount of
Title of Each Class of Securities to be Registered    Registered (1)       Price Per Share (2)      Offering Price  Registration Fee
------------------------------------------------------------------------------------------------------------------------------------
Class A Common Stock, par value $0.10 per share ..   3,000,000 shares            $24.40               $73,200,000       $9,275
====================================================================================================================================	

(1) This Registration Statement also relates to such indeterminate number of additional shares of Class A Common Stock, par value $.10 per share, of Watts Water Technologies, Inc. (the "Class A Common Stock") as may be required pursuant to the Watts Water Technologies, Inc. 2004 Stock Incentive Plan (the "Plan") in the event of a stock dividend, reverse stock split, split-up, recapitalization, forfeiture of stock under the Plan or other similar event.
(2) This estimate is made pursuant to Rule 457(c) and (h) under the Securities Act of 1933, as amended, solely for the purposes of determining the amount of the registration fee. The registration fee is based upon the average of the high and low sales price for a share of Class A Common Stock, as reported on the New York Stock Exchange as of May 24, 2004, a date within five business days prior to filing this Registration Statement.

PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
Item 1. Plan Information.*
Item 2. Registrant Information and Employee Plan Annual Information.*
* The information required by Part I to be contained in the Section 10(a) prospectus is not required to be filed with the Securities and Exchange Commission (the "Commission") as part of this registration statement on Form S-8 (the "Registration Statement") in accordance with Rule 428 under the Securities Act of 1933, as amended (the "Securities Act") and the Introductory Note to Part I of Form S-8.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
Watts Water Technologies, Inc. (the "Company") hereby incorporates by reference into this Registration Statement the following documents which have previously been filed with the Commission:
o the Company's Current Report on Form 8-K, filed on May 7, 2004;
o the Company's Current Report on Form 8-K, filed on May 25, 2004;
o the Company's Quarterly Report on Form 10-Q for the quarter ended March 31, 2004;
o the Company's Annual Report on Form 10-K for the year ended December 31, 2003; and
o the description of the Company's Class A Common Stock contained in the Company's Registration Statement on Form 8-A filed with the Securities and Exchange Commission on June 22, 1995, and all amendments and reports updating the description.
In addition, all documents subsequently filed with the Commission by the Company pursuant to Sections 13(a) and 13(c), Section 14 and Section 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), prior to the filing of a post-effective amendment thereto that indicates that all securities offered hereunder have been sold or that deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and to be a part hereof from the date of such documents.
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts and Counsel.
Not applicable.

Item 6. Indemnification of Directors and Officers.
Section 145 of the Delaware General Corporation Law provides that a corporation may indemnify any person who was or is a party or is threatened to be made a party to any threatened, pending or completed action, suit or proceeding, whether civil, criminal, administrative or investigative, other than an action by or in the right of the corporation, by reason of the fact that the person is or was a director, officer, employee or agent of the corporation or is or was serving at the corporation's request as a director, officer, employee or agent of another corporation, partnership, joint venture, trust or other enterprise, against expenses, including attorneys' fees, judgments, fines and amounts paid in settlement actually and reasonably incurred by the person in connection with the action, suit or proceeding if the person acted in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the corporation, and, with respect to any criminal action or proceeding, had no reasonable cause to believe the person's conduct was unlawful. The power to indemnify applies to actions brought by or in the right of the corporation as well, but only to the extent of expenses, including attorneys' fees but excluding judgments, fines and amounts paid in settlement, actually and reasonably incurred by the person in connection with the defense or settlement of the action or suit. And with the further limitation that in these actions, no indemnification shall be made in the event of any adjudication of negligence or misconduct in the performance of the person's duties to the corporation, unless a court believes that in light of all the circumstances indemnification should apply.
In accordance with Section 145 of the Delaware General Corporation Law, Article X of the Restated Certificate of Incorporation, as amended, of the Company provides that no director of the Company shall be personally liable to the Company or its stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the director's duty of loyalty to the Company or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived an improper personal benefit.
Article V of the Amended and Restated By-laws of the Company provides for indemnification by the Company of its directors, officers and certain non-officer employees under certain circumstances against expenses (including attorneys fees) judgments, fines and amounts paid in settlement reasonably incurred in connection with the defense or settlement of any threatened, pending or completed legal proceeding in which any such person is involved by reason of the fact that such person is or was a director, an officer or an employee of the Company, or is acting in any capacity with other entities at the request of the Company, if such person acted in good faith and in a manner he or she reasonably believed to be in, or not opposed to, the best interests of the Company, and with respect to criminal actions or proceedings, that such person had no reasonable cause to believe his or her conduct was unlawful.
Section 145(g) of the Delaware General Corporation Law and Article V of the Amended and Restated By-laws of the Company provide that the Company shall have the power to purchase and maintain insurance on behalf of its officers, directors, employees and agents, against any liability asserted against and incurred by such persons in any such capacity. The Company has obtained insurance covering its directors and officers against losses and insuring the Company against certain of its obligations to indemnify its directors and officers.
The Company has entered into indemnification agreements with its directors and officers. The agreements provide that each director and officer will be indemnified for expenses and liabilities incurred in any threatened, pending or completed claim, action, suit or proceeding brought against such person as a result of his or her status as a director or officer of the Company.
Item 7. Exemption from Registration Claimed.
Not applicable.

Item 8. Exhibits.
The following is a complete list of exhibits filed or incorporated by reference as part of this Registration Statement.
Exhibit

4.1   Restated Certificate of Incorporation, as amended (incorporated by
      reference to Exhibit 4.1 to the Company's Registration Statement on Form
      S-3, File No. 333-105989).
4.2   Amended and Restated By-laws, as amended (incorporated by reference to
      Exhibit 4.2 to the Company's Registration Statement on Form S-3, File No.
      333-105989).
5.1   Opinion of Goodwin Procter LLP.*
23.1  Consent of Goodwin Procter LLP (included in Exhibit 5.1 hereto).
23.2  Consent of KPMG LLP.*
24.1  Powers of Attorney (included in the signature page of this Registration
      Statement).
99.1  Watts Water Technologies, Inc. 2004 Stock Incentive Plan (incorporated by
      reference to Appendix B to the Company's Proxy Statement, filed with the
      Commission on March 31, 2004 pursuant to Section 14(a) of the Exchange
      Act).

----------	

* Filed herewith.
Item 9. Undertakings.
(a) The Company hereby undertakes:
(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:
(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;
(ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no mater than a 20% change in the maximum aggregate offering price set forth in "Calculation of Registration Fee" table in the effective registration statement; and
(iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;
provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) herein do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed by the undersigned registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in the Registration Statement;

(2) That, for the purposes of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof; and
(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.
(b) The Company hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Company's annual report pursuant to Section 13(a) or 15(d) of the Exchange Act and each filing of an employee benefit plan's annual report pursuant to Section 15(d) of the Exchange Act that is incorporated by reference in the Registration Statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.
(c) Insofar as indemnification for liabilities arising under the Securities Act may be permitted to the directors, officers, and controlling persons of the Company pursuant to the foregoing provisions, or otherwise, the Company has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities Act and is, therefor, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Company of expenses incurred or paid by a director, officer, or controlling person of the Company in the successful defense of any action, suit, or proceeding) is asserted by such director, officer, or controlling person in connection with the securities being registered, the Company will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of North Andover, The Commonwealth of Massachusetts, on May 28, 2004.
WATTS WATER TECHNOLOGIES, INC.

By: /s/ Patrick S. O'Keefe
    ----------------------
    Patrick S. O'Keefe
    Chief Executive Officer and Director	

KNOW ALL BY THESE PRESENTS that each individual whose signature appears below constitutes and appoints each of Patrick S. O'Keefe and William C. McCartney as such person's true and lawful attorney-in-fact and agent with full power of substitution and resubstitution, for such person in such person's name, place and stead, in any and all capacities, to sign any and all amendments (including post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto, and all documents in connection therewith, with the Securities and Exchange Commission, granting unto each said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in and about the premises, as fully to all intents and purposes as such person might or could do in person, hereby ratifying and confirming all that any said attorney-in-fact and agent, or any substitute or substitutes of any of them, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

        Signature                        Title                       Date
        ---------                        -----                       ----

 /s/ Patrick S. O'Keefe     Chief Executive Officer and Director   May 28, 2004
----------------------      (Principal Executive Officer)
Patrick S. O'Keefe

/s/ William C. McCartney    Chief Financial Officer, Treasurer     May 28, 2004
------------------------    and Secretary (Principal Financial
William C. McCartney        Officer and Principal Accounting
                            Officer)

/s/ Timothy P. Horne        Director                               May 24, 2004
--------------------
Timothy P. Horne

/s/ Kenneth J. McAvoy       Director                               May 28, 2004
---------------------
Kenneth J. McAvoy

/s/ Gordon W. Moran         Director                               May 24, 2004
-------------------
Gordon W. Moran

/s/ Daniel J. Murphy        Director                               May 28, 2004
--------------------
Daniel J. Murphy

/s/ Roger A. Young          Director                               May 28, 2004
------------------
Roger A. Young

/s/ John K. McGillicuddy    Director                               May 21, 2004
------------------------
John K. McGillicuddy	

EXHIBIT INDEX

Exhibit
  No.             Description
  ---             -----------

  4.1    --    Restated Certificate of Incorporation, as amended (incorporated
               by reference to Exhibit 4.1 to the Company's Registration
               Statement on Form S-3, File No. 333-105989).

  4.2    --    Amended and Restated By-laws, as amended (incorporated by
               reference to Exhibit 4.2 to the Company's Registration Statement
               on Form S-3, File No. 333-105989).

  5.1    --    Opinion of Goodwin Procter LLP.*

 23.1    --    Consent of Goodwin Procter LLP (included in Exhibit 5.1 hereto).

 23.2    --    Consent of KPMG LLP.*

 24.1    --    Powers of Attorney (included in the signature page of this
               Registration Statement).

 99.1    --    Watts Water Technologies, Inc. 2004 Stock Incentive Plan
               (incorporated by reference to Appendix B to the Company's Proxy
               Statement, filed with the Commission on March 31, 2004 pursuant
               to Section 14(a) of the Exchange Act).

----------	

* Filed herewith.

EXHIBIT 5.1
[GOODWIN PROCTER LLP LETTERHEAD]
May 28, 2004
Watts Water Technologies, Inc.
815 Chestnut Street
North Andover, Massachusetts 01845
Re: Legality of Securities to be Registered Under Registration Statement on Form S-8
Ladies and Gentlemen:
This opinion is furnished in connection with the registration statement on Form S-8 (the "Registration Statement") pursuant to the Securities Act of 1933, as amended (the "Securities Act"), relating to the registration of the sale of up to an aggregate of 3,000,000 shares (the "Shares") of class A common stock, par value $0.10 per share, of Watts Water Technologies, Inc., a Delaware corporation (the "Company"), which may be issued under the Watts Water Technologies, Inc. 2004 Stock Incentive Plan (the "Plan").
In connection with rendering this opinion, we have examined (i) the Restated Certificate of Incorporation of the Company, as amended, as on file with the Secretary of State of the State of Delaware, (ii) the Amended and Restated By-laws of the Company, as amended, (iii) such records of the corporate proceedings of the Company as we deemed material, (iv) the Registration Statement and the exhibits thereto and the related prospectus, (v) the Plan, and
(vi) such other certificates, receipts, records and documents as we considered necessary for the purposes of this opinion. In our examination, we have assumed the genuineness of all signatures, the legal capacity of natural persons, the authenticity of all documents submitted to us as certified, photostatic or facsimile copies, the authenticity of the originals of such copies and the authenticity of telephonic confirmations of public officials and others. As to facts material to our opinion, we have relied upon certificates or telephonic confirmations of public officials and certificates, documents, statements and other information of the Company or representatives or officers thereof.
We are attorneys admitted to practice in The Commonwealth of Massachusetts. We express no opinion concerning the laws of any jurisdictions other than the laws of the United States of America and the Commonwealth of Massachusetts and the Delaware General Corporation Law (which includes applicable provisions of the Delaware General Corporation Law and reported judicial decisions interpreting the Delaware General Corporation Law and applicable provisions of the Delaware Constitution), and express no opinion with respect to the blue sky or securities laws of any state, including, without limitation, Massachusetts and Delaware.

Watts Water Technologies, Inc.
May 28, 2004
Page 2
Based upon the foregoing, we are of the opinion that upon the issuance and delivery of the Shares against payment therefor in accordance with the terms of the Plan, the Shares will be validly issued, fully paid and nonassessable under the Delaware General Corporation Law.
The foregoing assumes that all requisite steps will be taken to comply with the requirements of the Securities Act and applicable requirements of state laws regulating the offer and sale of securities.
The opinions expressed herein are being furnished to you solely for your benefit in connection with the Registration Statement, and may not be used or relied upon by you for any other purpose. We hereby consent to the inclusion of this opinion as an exhibit to the Registration Statement. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act.
Sincerely,

/S/ GOODWIN PROCTER LLP

GOODWIN PROCTER LLP	

Exhibit 23.2
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
The Board of Directors
Watts Water Technologies, Inc.:
We consent to the incorporation by reference in the Registration Statement on Form S-8 of Watts Water Technologies, Inc. of our report dated February 3, 2004 except as to the first paragraph of Note 19, which is as of February 20, 2004, with respect to the consolidated balance sheets of Watts Water Technologies, Inc. and subsidiaries as of December 31, 2003, and 2002, and the related consolidated statements of operations, stockholders' equity and cash flows for each of the years in the three-year period ended December 31, 2003, which report appears in the December 31, 2003 annual report on Form 10-K of Watts Water Technologies, Inc.

/s/ KPMG LLP

Boston, Massachusetts
May 28, 2004