About Us

Founded in 2003 to reduce harmful nutrient pollution caused by septic systems and fertilizer runoff along Cape Cod, Massachusetts, EOSi’s early nutrient-removal systems included chemical formulations that became MicroC® premium carbon sources.

Expanding industry demand for MicroC® as a non-hazardous and cost-effective alternative to using methanol accelerated EOSi’s transformation into the high-growth industry leader in biological nutrient removal it is today.

Wide industry acceptance of nonhazardous carbon sources like MicroC® have rendered older methanol-based carbon supplement systems almost obsolete — with no new U.S. methanol-based installations reported in the past five years.

Why? Flammability and toxicity safety concerns, costly flammable-liquid storage and feed systems, and unsustainably of fossil-fuel derived imported methanol carbon sources. In contrast, non-hazardous and agriculturally renewable MicroC® carbon sources offer cheaper use and storage, rapid and flexible deployment, superior cold weather performance, and more.

EOSi’s MicroC® — the world’s leading non-hazardous supplemental carbon source — has become a recognized industry standard widely used in denitrification, enhanced biological phosphorus removal (EBPR), and biochemical oxygen demand (BOD) addition applications.

EOSi’s Nitrack® control system is the wastewater treatment industry’s first PC-based controller for biological nutrient removal applications, enabling plant operators to continuously monitor and optimize their unique treatment processes. Nitrack’s cloud-based communications integrate with customer treatment control systems, enabling EOSi’s team of engineers and technical experts to remotely manage vital aspects of the treatment process to achieve nutrient performance goals and permit compliance.