EVALUASI STATUS CEMARAN DAN STATUS TROFIK MUARA SUNGAI JELITIK TERKAIT KEBERADAAN KAWASAN INDUSTRI JELITIK (Evaluation of Jelitik Estuary Status Related to The Existence of Jelitik Industrial Area)

Jelitik is located in Bangka regency and it categorized as an industrial area based on Regional Regulation, Bangka Regency Number 3 in 2005. The Jelitik river channel and estuary received high sediment input and it become shallower due to anthropogenic activities in upstream, industrial activities and tin mining activities around the area. The potential for nutrient enrichment and increasing river estuary pollution can come from point sources such as industry or non-point sources from the Jelitik industrial area. Based on these problems, the purpose of this study was to analyze the trophic state of the Jelitik river estuary based on the trophic state index (TSI) and analyze the contamination status based on the Storet index method and CCME WQI. Six locations were determined by purposive sampling, while physical, chemical and biological parameters were analyzed in April and August 2021. Based on the location index, the six locations in the Jelitik river estuary area were still good/lightly polluted, while based on the CCME WQI, it was classified as good to fair. The research location can be categorized as oligotrophic based on TSI. The potential of quality and quantity degradation of the Jelitik estuary area requires an integrated effort and an effective and efficient strategy in overcoming the existing problems.