Three Dorchester residents— Leroy Ivey, Michelle Maffeo, and John P. Sullivan— were among those honored at Tuesday’s 2018 Shattuck Awards at the Seaport Hotel. Hosted by the Boston Municipal Research Bureau, the annual event singles out exemplary public employees from Boston.

Ivey, an outreach coordinator with the Bureau of Recovery Services’ AHOPE program, dedicates himself to expanding overdose prevention services to Boston’s vulnerable residents. A gifted coordinator of care and patient advocacy, he led the way in helping Boston confront the unprecedented opioid epidemic presenting itself locally.

Boston Police Officer Maffeo has dedicated herself to helping people with autistic spectrum disorders or Alzheimer’s and their caregivers through a collaboration with the Autism and Law Enforcement Coalition of Massachusetts that started in 2006. Her impact is citywide and has resulted in the development of a mandatory training program on autism and Alzheimer’s for Boston police officers.

Sullivan, chief engineer and operations officer with the Boston Water and Sewer Commission, is considered an expert in all facets of water and wastewater management. With his encyclopedic knowledge and 46 years of experience overseeing Boston’s water, sewer and storm water systems, he has made a significant contribution to the welfare of the city in helping the delivery of clean, safe drinking water to homes and businesses.