Dug well water is one of the clean water sources used in Kubu Raya Regency. However, through the initial testing, the physical and chemical qualities of the water were inadequate to meet the hygiene and sanitation demands of daily living following Regulation No. 32 of the Minister of Health of Indonesia 2017. Consequently, the objective of this study was to examine the treatment of dug well water by electrocoagulation and electrocoagulation-coagulation employing Poly Aluminium Chloride (PAC) as a coagulant with varying periods (45, 60, 75, and 90 minutes). Increasing the processing time in the electrocoagulation treatment enhanced the pH and TDS values while lowering the color, turbidity, Fe, and Mn metals. The pH value increased for the electrocoagulation-coagulation treatment. Conversely, the concentrations of color, turbidity, Fe metal, and Mn metal dropped, however, the TDS value increased, exceeding the threshold. Ultimately, the electrocoagulation treatment was more effective at reducing contaminants, as measured by advances in efficiency for pH, turbidity, color, Fe, and Mn.