Environmental Systems Service, Ltd. (ESS) offers quality services in the fields of environmental consulting and testing, water and wastewater treatment and analyses, and food and dairy testing. ESS is a privately held corporation and provides the benefit of unbiased, independent consulting and analyses from a highly trained technical staff. Our mission is to provide accurate and timely technical information at a reasonable cost. We are committed to environmentally responsible operations, which include using natural resources wisely and considering the overall impact on the environment.