Environmental Testing, Inc. (ETI) is a full service environmental laboratory that is locally owned and operated. We take great pride in providing our environmental consulting/engineering, governmental, and industrial clients with reliable and comprehensive organic and inorganic analysis of water, soil, and waste characterization. As a NELAP (National Environmental Laboratory Accreditation Program) accredited laboratory, we employ the highest standards of laboratory processes and procedures. With state certifications in Oklahoma, Texas, Kansas, Louisiana and North Dakota, we are able to deliver accurate, reliable data with a personal touch.