<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED CONDENSED FINANCIAL STATEMENTS OF CLEAN HARBORS, INC. FOR THE YEAR
ENDED DECEMBER 31, 1994 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
<CURRENCY> U.S. DOLLARS
       
                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1994
<PERIOD-START>                             JAN-01-1994
<PERIOD-END>                               DEC-31-1994
<EXCHANGE-RATE>                                      1
<CASH>                                           1,000
<SECURITIES>                                     1,542
<RECEIVABLES>                                   46,329
<ALLOWANCES>                                     1,495
<INVENTORY>                                      2,670
<CURRENT-ASSETS>                                52,118
<PP&E>                                         117,485
<DEPRECIATION>                                  47,713
<TOTAL-ASSETS>                                 159,875
<CURRENT-LIABILITIES>                           31,304
<BONDS>                                         60,465
<COMMON>                                            95
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          1
<OTHER-SE>                                      67,230
<TOTAL-LIABILITY-AND-EQUITY>                   159,875
<SALES>                                        207,073
<TOTAL-REVENUES>                               207,073
<CGS>                                          146,132
<TOTAL-COSTS>                                  146,132
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               7,432
<INCOME-PRETAX>                                  3,314
<INCOME-TAX>                                     1,619
<INCOME-CONTINUING>                              1,695
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                  1,220
<CHANGES>                                            0
<NET-INCOME>                                       475
<EPS-PRIMARY>                                      .00
<EPS-DILUTED>                                        0