DEVELOPMENT OF HANDHELD DRINKING WATER QUALITY TESTER WITH

Contamination and ineffective testing methods of drinking water remain a major problem worldwide, increasing the risk of inadequate water quality especially in developing and hard to reach communities. This is because conventional methods of testing water may be either, very costly, time-consuming or complicated for general application. This project aims at finding solution for these challenges by designing a portable handheld water quality monitoring device that measures water pH, turbidity and temperature as well as total dissolved solids (TDS). It combines sensors with an ESP32 microcontroller and the outcomes are displayed on an LCD screen, and a smartphone using BLYNK. Experiments conducted under experimental conditions proved that the proposed system has minimum deviations and MAE values thus giving us consistent and accurate measurements. Overall, the device can be called practically convenient for its intended purposes, however, certain aspects, such as the need to improve power consumption, are still suboptimal, as well as the lack ofpossibilities to fine-tune interface to the individual necessities. This project provides a tangible solution and it’s feasible in real time water quality monitoring thus promoting safer drinking water and better health outcome among the community.