Exhibit 11 Computation of Net Income per Common Share Watts Industries, Inc. (Amounts in thousands, except per share information) Fiscal year ended June 30 1997 1996 1995 ------------------------------------ FULLY DILUTED Average shares outstanding: Class A Common Stock, par value $.10 15,868 18,161 18,118 Class B Common Stock, par value $.10 11,266 11,366 11,448 Net effect of dilutive stock options--based upon treasury stock method using ending market price, if higher than average 299 0 189 price ------------------------------------ Total 27,433 29,527 29,755 ==================================== Income (loss) from continuing operations $48,460 $(53,765) $42,463 Income from discontinued operations 79 3,480 3,275 Gain on disposal of discontinued 3,208 0 0 operations ==================================== Net income (loss) $51,747 $(50,285) $45,738 ==================================== Income (loss) per Common Share: Income (loss) from continuing $1.77 $(1.82) $1.43 operations Income from discontinued operations .00 .12 .11 Gain on disposal of discontinued .12 .00 .00 operations ==================================== Net income (loss) $1.89 $(1.70) $1.54 ====================================