UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549


                                    FORM 8-K


                             CURRENT REPORT PURSUANT
                          TO SECTION 13 OR 15(D) OF THE
                         SECURITIES EXCHANGE ACT OF 1934


   Date of report (Date of earliest event reported)         March 21, 2005
                                                   -----------------------------

                         Watts Water Technologies, Inc.
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             (Exact Name of Registrant as Specified in Its Charter)

                                    Delaware
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                 (State or Other Jurisdiction of Incorporation)

                001-11499                             04-2916536
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        (Commission File Number)           (IRS Employer Identification No.)

           815 Chestnut Street
      North Andover, Massachusetts                                01845
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(Address of Principal Executive Offices)                       (Zip Code)

                                 (978) 688-1811
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              (Registrant's Telephone Number, Including Area Code)

                                       N/A
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          (Former Name or Former Address, if Changed Since Last Report)

      Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

|_|   Written communications pursuant to Rule 425 under the Securities Act (17
      CFR 230.425)

|_|   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)

|_|   Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

|_|   Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))



Item 1.01. Entry into a Material Definitive Agreement

      On March 21, 2005, Watts Water Technologies, Inc. (the "Company") and
certain subsidiaries of the Company entered into Amendment No. 1 to Credit
Agreement and Amendment No. 1 to Guaranty Agreement (the "Amendment"), with
respect to its Credit Agreement, dated September 23, 2004, among the Company,
certain subsidiaries of the Company who became borrowers under the Credit
Agreement, Bank of America, N.A. as Administrative Agent, Swing Line Lender and
Letter of Credit Issuer, JPMorgan Chase Bank and Wachovia Bank, National
Association, as Syndication Agents, KeyBank, National Association and SunTrust
Bank, as Documentation Agents, and the other lenders referred to therein (the
"Credit Agreement") and the related Guaranty delivered to Bank of America, N.A.,
as Administrative Agent, on September 23, 2004 in connection with the Credit
Agreement (the "Guaranty Agreement"). Under the terms of the Amendment, the
foreign subsidiaries of the Company party to the Credit Agreement and the
Guaranty Agreement shall not be guarantors of the obligations of the Company or
domestic subsidiaries of the Company under the Credit Agreement and are required
to be guarantors of only the obligations of the Company's foreign subsidiaries
under the Credit Agreement.

Item 9.01 Financial Statements and Exhibits

      (c)   Exhibits.

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

         10.1           Credit Agreement, dated as of September 23, 2004, among
                        Watts Water Technologies, Inc., certain of its
                        subsidiaries, Bank of America, N.A., as Administrative
                        Agent, and the several financial institutions party
                        thereto from time to time. (1)

         10.2           Amendment No. 1 to Credit Agreement and Amendment No. 1
                        to Guaranty Agreement, dated as of March 21, 2005, by
                        and among Watts Water Technologies, Inc., certain of its
                        subsidiaries, Bank of America, N.A., as Administrative
                        Agent, and the several financial institutions party
                        thereto from time to time.

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(1)   Incorporated by reference to the Registrant's Quarterly Report on Form
      10-Q filed November 5, 2004



SIGNATURES

      Pursuant to the requirements of the Securities and Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                         WATTS WATER TECHNOLOGIES, INC.


Date:  March 22, 2005
                                         By: /s/ Kenneth R. Lepage
                                             ----------------------------
                                             Name:  Kenneth R. Lepage
                                             Title: Assistant General Counsel
                                                    and Assistant Secretary



                                  EXHIBIT INDEX

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

    10.1          Credit Agreement, dated as of September 23, 2004, among Watts
                  Water Technologies, Inc., certain of its subsidiaries, Bank of
                  America, N.A., as Administrative Agent, and the several
                  financial institutions party thereto from time to time. (1)

    10.2          Amendment No. 1 to Credit Agreement and Amendment No. 1 to
                  Guaranty Agreement, dated as of March 21, 2005, by and among
                  Watts Water Technologies, Inc., certain of its subsidiaries,
                  Bank of America, N.A., as Administrative Agent, and the
                  several financial institutions party thereto from time to
                  time.

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(1)   Incorporated by reference to the Registrant's Quarterly Report on Form
      10-Q filed November 5, 2004