The Department may perform announced, or unannounced, on-site evaluations of the premises and operations of a water quality laboratory that is currently certified or that has applied for certification. During an on-site evaluation, the Department may evaluate the adequacy of the quality assurance program, qualifications of personnel, adequacy of equipment, adequacy of the supervision, and compliance with these regulations. An in-State water quality laboratory may not analyze regulated drinking water contaminants until the Department has conducted an on-site evaluation. The Department may revoke the certification of a laboratory that refuses access for the on-site evaluation. The water quality laboratory shall notify the Department of any on-site evaluations performed by other states or third-party organizations that include the review of drinking water test methods.