ETI is a full service, locally owned and operated environmental laboratory that provides analytical testing services to a variety of engineers, consultants, municipalities, state and federal government agencies, and private industry companies. As a NELAP (National Environmental Laboratory Accreditation Program) accredited laboratory certified in Oklahoma, Texas, Louisiana, Kansas, and North Dakota, ETI provides our clients with the highest quality data available. Our personal touch and direct communication allow our clients to confidently depend on us. Our expertise and culture give us the opportunity to utilize our strengths to benefit our community and environment. Through our strategic partnerships and clients, ETI is commited to a spirit of environmental awareness and economic progress.