Total suspended solids (TSS) were measured by vacuum filtering samples into pre-weighed glass microfiber filters. Samples were dried Meanwhile, tetracycline concentration was measured using a Nanospace SI-2 Liquid Chromatograph (Shiseido Co., Japan) with a Unison C18 column (3 mm particle size and 250 mm 4.6, dimensions) following conditions by Lee et al. (Lee et al., 2005).