A course designed for plumbing, mechanical and fire suppression contractors, city building and plumbing officials, public utilities inspectors, water and wastewater personnel, health department officials and engineers will be held Wednesday, July 12, and Thursday, July 13, from 8 a.m. to 4 p.m. in room 111 at the Paul D. Camp Community College Hobbs Suffolk Campus, 271 Kenyon Road. Backflow Prevention Device Certification costs $300 and is worth one credit. Financial assistance is available. Register by July 7 at 4:30 p.m. and pay online at pdc.augusoft.net. For more information, call 757-569-6050 or email workforce@pdc.edu.