Tambak merupakan salah satu ekosistem buatan manusia berupa kolam yang berada di daratan sekitar pantai dengan kondisi air bersifat payau. Kualitas air tambak sebagai salah satu dasar penentuan kesesuaian terhadap organisme yang akan dibudidayakan. Tujuan penelitian yakni mengetahui kondisi kualitas air tambak tradisional melalui parameter fisika berupa Total Suspended Solid (TSS) dan Total Dissolved Solid (TDS). Metode uji parameter TSS dan TDS menggunakan gravimetri. Hasil penelitian menunjukkan kandungan TSS inlet dan outlet berkisar antara 11-48 mg/L dan 38-74 mg/L. Kandungan TSS tertinggi pada inlet dan outlet berkisar 48 mg/L dan 74 mg/L. Kandungan TDS inlet dan outlet berkisar antara 3722-15293 mg/L dan 5927-15523 mg/L. Kisaran nilai kandungan TSS masih dalam batas kategori baik sedangkan untuk TDS telah melebihi baku mutu air kelas III menurut Peraturan Republik Indonesia No. 82 Tahun 2001.
Kata Kunci: Kota Tarakan, Kualitas air, Tambak, TDS, TSS

Fish pond is one of artifical ecosystems with brackish air conditions. The water of fish pond is used are one of for determining suitainability of the organisms that will be cultivated. The aim of the research was to know the water quality of fish pond through physical parameters such as Totally Suspended Solid (TSS) and Total Dissolved Solids (TDS). The TSS and TDS analysis method used gravimetry. The results showed a that TSS inlets and outlets contain was about 11-48 mg / L and 3874 mg/L. The highest TSS respectively in the inlet and the outlet were 48 mg/L and 74 mg/L. The content of TDS in inlet was 3722-15293 mg/L and outlet was 592715523 mg/L. The range of TSS refers to the temporary good category, then TDS exceeding the quality standard of water class III to Republic of Indonesia Regulation No. 82 in 2001. Keyword: Ponds, Tarakan City, TDS, TSS , Water Quality