Exhibit 23.06


                             THE MENTOR GROUP, INC.
                        777 EAST TAHQUITZ CANYON WAY #200
                         PALM SPRINGS, CALIFORNIA 92262

May 7, 1998

Mr. Kevin L. Spence
Chief Financial Officer
United States Filter Corporation
40-004 Cook Street
Palm Desert, CA 92211

Re:  Consent of Independent Appraisers Letter

Dear Kevin:

We  hereby  consent  to  the  incorporation  herein  of  our  January  31,  1998
independent valuation report of the In-Process Research and Development acquired
by United States Filter Corporation  ("U.S.  Filter") from Memtec Limited in the
U.S.  Filter  Form S-3 dated  March 31,  1998,  addressing  the  Securities  and
Exchange  Commission  comment  letter  dated March 13,  1998 on the U.S.  Filter
Registration Statement on Form S-3 filed February 10, 1998.

We also consent to the  reference to The Mentor  Group,  Inc.  under the heading
"Experts" in such Form S-3.

If you require anything further pursuant to this matter,  please do not hesitate
to call.

Sincerely,

THE MENTOR GROUP, INC.



/s/ John D. Glenn

John D. Glenn
President and Managing Director