DWC CPAs and Advisors . is a certified public accounting and consulting firm that provides professional accounting, audit, and business advisory services to individuals and businesses of all sizes. For 75 years, DWC CPAs and Advisors has been a leader in the public accounting profession. We are the largest public accounting firm headquartered in western Colorado with main offices in Grand Junction, Glenwood Springs, and Montrose. Accounting Today consistently ranks DWC as one of the Top Regional Firms, and we are honored by ColoradoBiz to be a Top 250 Private Colorado Company and Top Colorado Accounting Firm.