The Snail Canning Industry has the potential to impact the environment if wastewater with high organic compound content is not treated first. This study aims to analyze the performance of the Snail Canning Industry Wastewater Treatment Plant (WWTP) based on BOD, COD, and TSS parameters. The method used is descriptive, with primary data obtained through interviews and secondary data from laboratory test results. Measurements were taken at the inlet and outlet points of the WWTP, then compared with the quality standards based on the Regulation of the Minister of Environment No. 5 of 2014. The results showed that the WWTP succeeded in reducing the concentration of BOD from 201 mg/L to 6 mg/L, COD from 315 mg/L to 24 mg/L, and TSS from 25 mg/L to 6 mg/L. The reduction efficiency of each parameter was 97.01% for BOD, 92.38% for COD, and 76% for TSS. All outlet results met the established quality standards. This indicates that the wastewater treatment process at the IPAL functions effectively in reducing the levels of pollutant parameters in wastewater.

Compensation is an effort to reduce the pollution load from other sectors to replace the wastewater load that will be discharged by businesses and/or activities due to river water quality being exceeded. Currently, most large rivers in Indonesia have exceeded the water quality standards set by the government. The one of the hospitals in Jember plans to discharge wastewater into the Bedadung River. However, the Biochemical Oxygen Demand (BOD) quality standard for the Bedadung River has been exceeded. Therefore, alternative compensation activities are needed to reduce the BOD levels of the Bedadung River. Bathing, Washing, and Toilet (MCK) facilities with biofilter septic tanks were chosen. This technology is considered to be able to effectively reduce the BOD concentration of domestic waste before being discharged into the environment. This study aims to calculate the potential for reducing the BOD pollutant load in Bedadung River water if compensation is carried out through the construction of MCK with a biofilter septic tank system, so that it is expected to provide a significant contribution to improving river water quality while supporting the sustainability of hospital activities.