Hoffland Environmental, Inc. (HEI) is an industry leader in the custom design, manufacture and installation of Turnkey Industrial Wastewater Treatment Systems. Founded in 1978, HEI has nearly 40 years of industry expertise and has manufactured and installed over 1,000 wastewater treatment systems throughout the United States and the world. In addition to wastewater treatment, HEI is a pioneer in the metal recovery closed loop and water reuse systems. HEI is a registered Texas Professional Engineering firm. Our headquarters are located in Conroe, TX.