Boarding House Water Usage Monitoring System Using Ineternet of Things-Based Application

The need for water is increasing daily along with the increasing population in an area. One of the reasons for increasing water demand is boarding houses. The water consumption limit for luxury boarding houses is 123.45 liters/person/day; for medium boarding houses, it is 120.52 liters/person/day, and for simple boarding houses, 115.86 liters/person/day. In this study, a water usage monitoring system was designed using an Internet of Things-based application to monitor water discharge and volume via a smartphone. This system uses a water flow sensor, solenoid valve, and Arduino Uno ATMega microcontroller, which is communicated serially with the ESP8266, a two-channel relay, and a water pump so that water can flow quite fast. The monitoring system designed can calculate the water discharge and the volume of water usage for boarding house residents per day with a water usage limit of 123 liters/person/day. If the boarding house occupants use water exceeding the predetermined limit, the excess water usage fee will be charged to the house occupant. This monitoring system is implemented in 2 rooms in a boarding house. Based on the tests that have been carried out, the average water consumption in Room 1 is 123.72 liters, with an average water flow of 22.41 liters/min. In comparison, the average water consumption in Room 2 is 116.54 liters, with an average water discharge of 21.48 liters/min. Then the accuracy value of the water discharge is 99.88%, the water volume is 98.88% in Room 1, the accuracy value of the water discharge is 99.85%, and the water volume is 95.19% in Room 2. This shows that the monitoring system can work according to the design, where the monitoring system can display the daily water usage of boarding house residents through the Blynk application. Then the monitoring result data is sent to the user via email that the occupant has registered on the Blynk application.