|EXHIBIT 31.1                                                                                                                                                                                                                                                                                                   
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|CERTIFICATION                                                                                                                                                                                                                                                                                                  
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|I, Dallas Talley, certify that:                                                                                                                                                                                                                                                                                
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|1.   I have reviewed this report on Form 10-KSB of Capacitive Deionization Technology Systems, Inc.;                                                                                                                                                                                                           
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|2.   Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
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|Date: July 26, 2005                                                                                                                                                                                                                                                                                            
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| | /s/ Dallas Talley        
| | -------------------------
| | Dallas Talley            
| | Chairman of the Board and
| | Chief Executive Officer