EXHIBIT 23.1 Securities and Exchange Commission 450 Fifth Street, N.W. Washington, DC 20549 CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS We consent to the incorporation by reference in this Post- Effective Amendment No. 1 to the Registration Statement on Form S-8 (File No. 333-72044) of our report dated April 10, 2001 appearing in the Annual Report on Form 10-KSB of Hydro Environmental Resources, Inc. for the period ended December 31, 2000 and to the reference to us under the heading "Experts" in such Registration Statement. /s/ Cordovano and Harvey, P.C. CORDOVANO AND HARVEY, P.C. Certified Public Accountants Denver, Colorado December 4, 2001