<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
JUNE 30, 1999 AQUARION COMPANY FOR 10-Q AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>

                             
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1999
<PERIOD-START>                             JAN-01-1999
<PERIOD-END>                               JUN-30-1999
<CASH>                                           1,159
<SECURITIES>                                         0
<RECEIVABLES>                                   15,890
<ALLOWANCES>                                     2,240
<INVENTORY>                                      4,865
<CURRENT-ASSETS>                                47,280
<PP&E>                                         502,613
<DEPRECIATION>                                 153,078
<TOTAL-ASSETS>                                 465,024
<CURRENT-LIABILITIES>                           35,447
<BONDS>                                        141,380
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                        11,395
<OTHER-SE>                                     140,164
<TOTAL-LIABILITY-AND-EQUITY>                   465,024
<SALES>                                         53,286
<TOTAL-REVENUES>                                53,286
<CGS>                                                0
<TOTAL-COSTS>                                   25,275
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                    52
<INTEREST-EXPENSE>                               5,005
<INCOME-PRETAX>                                 13,058
<INCOME-TAX>                                     5,140
<INCOME-CONTINUING>                              7,918
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,918
<EPS-BASIC>                                     0.70
<EPS-DILUTED>                                     0.67