MASI (Mobile Analytical Services, Inc) is a full-service environmental laboratory specializing in Sampling and Analysis on drinking water, wastewater, storm water, solid waste, and industrial pretreatment permits. In addition, MASI offers electronic EPA reporting, a state-wide* courier service, and quick consistent turn times. With two locations (in Columbus and Cincinnati) to serve you and more than 48 years of experience, let MASI tailor services to meet your needs.