Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) testing is required to monitor pollution load for all medium-scale industrial units that generate process wastewater legally. The incubation period for BOD can be up to five days, which makes it impractical to perform routine testing for micro, small, and medium enterprises (MSMEs), leading to the practice of more frequent pollution monitoring being neglected. In this paper, a cost-field-deployable wastewater screening architecture is proposed, which indirectly estimates BOD and COD by two low-cost proxy measurements. Turbidity, electrical conductivity. The proposed system assumes a 2-sensor input space to enable the full system from acquisition to inference to run on a low-power microcontroller without needing external connectivity. This paper outlines the system architecture, data-collection protocol, candidate regression algorithms, and an evaluation plan using regression metrics compared against statutory discharge limits, placing the system in a position to be a cost-effective early-warning screening device as opposed to a certified laboratory replacement.