I examine inefficiencies in Japanese water utility companies. Efficiency in this context is defined as a firm’s capacity to maximize output given a fixed level of inputs. The findings suggest that the average operation rate, customer density and size variables are associated with lower levels of inefficiency (or higher levels of efficiency), while water purification (a conditioning variable cap...

In a polarized political setting, public policy towards the water sector evolves in response to pressures. The Bolivian experience provides lessons for other nations. First, technical skills are necessary, but not sufficient for regulatory sustainability. In addition, those implementing policy must think politically without being political. To establish incentives for good sector performance, p...

High utility itemset mining (HUIM) is a new emerging field in data mining which has gained growing interest due to its various applications. The goal of this problem is to discover all itemsets whose utility exceeds minimum threshold. The basic HUIM problem does not consider length of itemsets in its utility measurement and utility values tend to become higher for itemsets containing more items...

Monitoring the water level in open channels of regional utility company needs to be carried out ensure availability raw processed. This research focuses on making a prototype monitoring system an channel utilizing WSN (Wireless Sensor Network) component as application IoT (Internet Things) concept. is using infrared sensor GP2Y0A02KF0Y. The real-time measurement results are then sent XBee wirel...

Benchmarking is one of several regulatory tools to encourage continuous improvement of water utility operations and to evaluate utility performance. Regulators of water utilities can use benchmarking, in conjunction with incentive regulation, to reward efficient utilities that provide high quality service. However, benchmarking requires careful planning. This article, the fourth in a series abo...

R eduction of nonrevenue water use is currently a common goal for most water distribution systems. Nonrevenue water consists of water lost either through real losses (e.g., underground leakage) or through apparent losses (e.g., metering inaccuracies and unauthorized use). Reducing the apparent losses caused by meter inaccuracies at low flows can result in substantial short-term increases in uti...