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                                                                     EXHIBIT E-1

                             JOINT FILING AGREEMENT

         In accordance with Rule 13d-1(f) under the Securities Exchange Act of
1934, as amended, the undersigned hereby agree to the joint filing with all
other Reporting Persons (as such term is defined in the Schedule 13D referred to
below), on behalf of each of them a statement on Schedule 13D (including any and
all amendments thereto) with respect to the Common Stock, $0.01 par value per
share, of U S Liquids Inc. and that this Joint Filing Agreement be included as
an Exhibit to such Schedule 13D filing. This Agreement may be executed in any
number of counterparts all of which taken together shall constitute one and the
same instrument.

         IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing
Agreement this 23rd day of March, 2001.

                                                     /s/ Carl E. Warden
                                                     ---------------------------
                                                     Carl E. Warden


                                                     /s/ William M. DeArman
                                                     ---------------------------
                                                     William M. DeArman






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