EXHIBIT 11 MIDDLESEX WATER COMPANY STATEMENT REGARDING COMPUTATION OF PER SHARE EARNINGS (In Thousands) Three Months Ended Nine Months Ended September 30, September 30, 1999 1998 1999 1998 BASIC: Income Shares Income Shares Income Shares Income Shares -------- ------ -------- ------ -------- ------- -------- ------ Income Before Preferred Stock Dividend Requirement $ 2,781 4,932 $ 2,348 4,358 $ 6,846 4,916 $ 5,185 4,326 Less Preferred Stock Dividend Requirement (78) (80) (237) (239) ------- ------ ------- ----- ------- ----- ------- ----- Earnings Applicable to Common Stock $ 2,703 4,932 $ 2,268 4,358 $ 6,609 4,916 $ 4,946 4,326 Basic Earnings Per Share of Common Stock $ 0.55 $ 0.52 $ 1.34 $ 1.14 ------- ------- ------- ------- DILUTED: Earnings Applicable to Common Stock $ 2,703 4,932 $ 2,268 4,358 $ 6,609 4,916 $ 4,946 4,326 Convertible Preferred Stock $7.00 Series Dividend 26 89 26 89 78 89 78 89 Convertible Preferred Stock $8.00 Series Dividend 38 135 40 137 118 137 120 137 ------- ------ ------- ----- ------- ----- ------- ----- Adjusted Earnings Applicable to Common Stock $ 2,767 5,156 $ 2,334 4,584 $ 6,805 5,142 $ 5,144 4,552 Diluted Earnings Per Share of Common Stock $ 0.54 $ 0.51 $ 1.32 $ 1.13 ------- ------- ------- ------- (continued) Twelve Months Ended September 30, 1999 1998 BASIC: Income Shares Income Shares -------- ------ ------- ------- Income Before Preferred Stock Dividend Requirement $ 8,182 4,795 $ 6,559 4,310 Less Preferred Stock Dividend Requirement (317) (319) ------- ----- ------- ------ Earnings Applicable to Common Stock $ 7,865 4,795 $ 6,240 4,310 Basic Earnings Per Share of Common Stock $ 1.64 $ 1.45 ------- ------- DILUTED: Earnings Applicable to Common Stock $ 7,865 4,795 $ 6,240 4,310 Convertible Preferred Stock $7.00 Series Dividend 104 89 104 89 Convertible Preferred Stock $8.00 Series Dividend 158 137 160 137 ------- ----- ------- ----- Adjusted Earnings Applicable to Common Stock $ 8,127 5,021 $ 6,504 4,536 Diluted Earnings Per Share of Common Stock $ 1.62 $ 1.43 ------- -------