The act creates the 'Colorado Mandatory Lethality Assessment Act', which requires peace officers to conduct a lethality assessment when responding to a domestic violence incident and include the completed lethality assessment in the incident report. A peace officer is not required to administer a lethality assessment if a victim is unavailable, not at the scene, incapacitated, or if circumstances otherwise make the administration of the lethality assessment impossible or impracticable. If the lethality assessment indicates that an individual is a high-risk victim, or if the lethality assessment does not indicate a victim is high-risk but a peace officer determines an individual is a high-risk victim based on the totality of the circumstances, the peace officer is required to immediately contact a community-based victim's advocate either by phone or in person and provide the high-risk victim the opportunity to speak with the advocate.     The act requires the attorney general's office, in consultation with a Colorado-based coalition that advocates for survivors of domestic violence, to develop a mandatory training for peace officers to learn how to administer the lethality assessment and provide victim referrals. No later than June 1, 2027, the attorney general is required to make the training available and offer assistance to law enforcement agencies in providing the training. Beginning July 1, 2027, the act requires each law enforcement agency to ensure that each peace officer employed by the agency has completed the mandatory training; except that a law enforcement agency that has provided training on the administration of lethality assessments prior to July 1, 2027, is not required to provide additional training.     Beginning January 2028, and each January thereafter, the act requires the attorney general's office to report to the general assembly certain information related to lethality assessments conducted in the previous calendar year. No later than January 31, 2030, the domestic violence fatality review board shall evaluate the effectiveness of mandatory lethality assessments and referrals to resources and submit the evaluation to the general assembly.     The act does not impose criminal, administrative, or civil liability on any person for an act or omission made in good faith related to administering a lethality assessment.(Note: This summary applies to this bill as enacted.)