Proteus instruments has a range of sensors for organic pollution monitoring in natural river systems. The Proteus BOD provides a robust indication of human and animal waste inputs into river networks. The sensor is suitable for both fixed point monitoring, providing information on event dynamics or intermittent pollution sources, and catchment wide spot sampling. The highly accurate, conventional parameter outputs (i.e. BOD, COD) alongside environmental fluorescence outputs make the Proteus BOD ideal for river basin managers, regulators and researchers alike. In addition, the Proteus DOC is ideal for monitoring upland areas where land management practices may be leading to elevated DOC concentration due to erosion of organic rich soils. Both sensor platforms are robust, low powered and have automatic cleaning mechanisms so are the ideal solution for monitoring in remote or logistically challenging locations.