GAP EnviroMicrobial Services Ltd. (GAP) specializes in environmental microbiology laboratory services including testing, analysis, and research in areas of surface water, wastewater treatment, disinfection efficacy, microbial detection and identification. GAP was established in 1996, and has grown since that time in both size and in the variety of services we offer and has continuously provided quality analysis for industries, institutions, engineers, and consultants.