Harford County Health Department - Hays Street Office: Birth and Death Certificates, Behavioral Health, Substance Use, Maryland Children's Health, Medical Assistance, Medical Assistance Transportation. Environmental Health, Air and Water Quality, Building Permit Review, Food Facility Inspections, Septic Systems, Wells, Public Swimming Pools. Other locations - Clinical Services: Family Planning, Immunizations, STD, HIV, AIDS, Dental. Assistance Programs: WIC, Administrative Care Coordination, Nurse Monitoring, Hospital Outreach. Community Health: Health Care for the Homeless, Infectious Diseases, Lead Poisoning Prevention, Tobacco Use Prevention and Education. Maternal and Child Health, Preventive Health Services, Social Work Services.