This study has the following aims: (1) to describe the working environment, motivation, working discipline and employees’performance; (2) to analyze the influence of working environment (X1), motivation (X2, and working discipline (X3) on employees’ performance (Y); and (4) to examine the variables that have dominant influence towards the employees ‘performance of Local Water Supply Utility at Sikka Regency, East Nusa Tenggara Province. This study used 81 respondents. The analysis technique used is the multiple regression analysis, F test, and t-test. The descriptive results of statistics showed that the workplace environment was formed by the following things: lighting, air temperature and air circulation, color, music, and working security. The main thing that supported the workplace environment was the air temperature with an average value between 4.28 to 4.36. The air temperature setting was proven to be the best since it made the room felt fresh. Next, motivation was formed by the following needs: physiological, safety, social, appreciation, and self-actualization. The main thing that built motivation was social need, reward need, and self-actualization need of with an average value of 4.42 for each need. Furthermore, the needs were reflected as follows: the presence of leaving permission owned by employees (4.51), the Leader gave an award for the work that had been performed well (4.47), and the Leader gave an opportunity for promotion (4.51). Meanwhile, the workplace discipline was formed by attendance, compliance attitude with work standards, adherence attitude on work rules and work ethics. The main thing that could improve workplace discipline was an adherence attitude on company’s rules with an average value of 4.4. It was reflected from employees’ willingness to use the prearranged uniform set (4.53). Furthermore, employee performance was shaped by the quality of work, quantity of work, punctuality, effectiveness, independence and work commitment. The main thing that could improve employees’ performance was the effectiveness with an average value of 4.43.It was depicted by how the respondents utilizing their time in completing their tasks (4.49). The workplace environment, motivation, and workplace discipline were shaping the employees’ performance of Local Water Supply Utility (PDAM) at Sikka Regency, East Nusa Tenggara Province. Thus, it could be concluded that good workplace environment which was supported by employees who had high motivation, and high workplace discipline to work in compliance with applicable rules and regulations, definitely could improve employees’ performance. Motivation influenced the likelihood of employees’ performance of Local Water Supply Utility (PDAM) at Sikka Regency, East Nusa Tenggara Province. This showed that the main thing that could improve employees’ performance wasmotivation.