
                                  Exhibit 32.2

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

The undersigned officer of Watts Industries, Inc. (the "Company") hereby
certifies that the Company's quarterly report on Form 10-Q to which this
certification is attached (the "Report"), as filed with the Securities and
Exchange Commission on the date hereof, fully complies with the requirements of
Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934,
as amended (the "Exchange Act"), and that the information contained in the
Report fairly presents, in all material respects, the financial condition and
results of operations of the Company. This certification is provided solely
pursuant to 18 U.S.C. Section 1350 and Item 601(b)(32) of Regulation S-K ("Item
601(b)(32)") promulgated under the Securities Act of 1933, as amended (the
"Securities Act"), and the Exchange Act. In accordance with clause (ii) of Item
601(b)(32), this certification (A) shall not be deemed "filed" for purposes of
Section 18 of the Exchange Act, or otherwise subject to the liability of that
section, and (B) shall not be deemed to be incorporated by reference into any
filing under the Securities Act or the Exchange Act, except to the extent that
the Company specifically incorporates it by reference.


Date: August 13, 2003                           /s/ William C. McCartney
      ---------------                           ------------------------
                                                William C. McCartney
                                                Chief Financial Officer

A signed original of this written statement required by Section 906 has been
provided to the Company and will be retained by the Company and furnished to the
Securities and Exchange Commission or its staff upon request.


