Pinastik (Pipa Tunas Septik or horizontally septic pipe) is sppropriate technnology to treatment wastewater on small scale. Pinastik made from 6” PVC pipe designed by prof. Ir. Hardjoso Pr. From UGM Yogyakarta. This tecnology give more adventage on domestic wastewater treatment but still showing low efficiency on removing organic matter (only 11.88%). Organic matter correlated with solids on …