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IoT-Based Water Quality Monitoring System Using ESP32 with NSF-WQI Method on Various Water Sources Ulfa Niswatul Khasanah; Moh. Mimbar Fauzi; Fatra Nonggala Putra; Imroatul Fatikha Kurniati; Januar Gilang Ramadhan
Jurnal Teknologi Informatika dan Komputer Vol. 12 No. 1 (2026): Jurnal Teknologi Informatika dan Komputer
Publisher : Universitas Mohammad Husni Thamrin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37012/jtik.v12i1.3185

Abstract

Water quality is an important indicator in maintaining environmental health and ecosystem sustainability. Direct water quality monitoring would be challenging for determining the quality of water sources. Therefore, it is necessary to design a real-time Water Quality Index (WQI) monitoring system based on the Internet of Things (IoT) using the ESP32 microcontroller with sensors for pH, temperature, turbidity (NTU), Total Dissolved Solids (TDS), and electrical conductivity (EC). The system is designed to be portable with a battery power source and is capable of sending data in real-time to a server for display via a web interface, as well as providing automatic notifications through Telegram.Water quality assessment is performed using the National Sanitation Foundation Water Quality Index (NSF-WQI) method with four main parameters: pH, temperature, NTU, and TDS. The system is also capable of classifying water quality into 5 categories: Excellent, Good, Medium, Bad, and Very Bad. Laboratory tests were conducted on various liquids (coffee, soap, and milk), followed by field tests at three locations: Tempur River, Paddy Field Irrigation Flow, and Mbelik Tirta Wening Minggirsari Water Source. The measurement results show WQI values of 65–69 (Medium category) for Tempur River, 75–83 (Good category) for Paddy Field Irrigation Flow, and 93–98 (Excellent category) for Mbelik Tirta Wening Minggirsari Water Source. The system successfully demonstrated accurate, responsive, and reliable performance, making it suitable for sustainable water quality monitoring.
Co-Authors Abd. Charis Fauzan Agus Zainal Arifin Ahmad Agung Saputra Ahmad Gufron Ahmad Gufron Ahmad Makhi Ahmad Saifudin, Ahmad Anshori, M Subhan Anshori, Subhan Apriliyanti Apriliyanti Ari Effendi Arif Muzayin Shofwan, Arif Muzayin Atallah, Mukhammad Tsafiq Ayu Eviana Bagus Waluyo Binti Aulatul Mufida Chastine Fatichah Dika, Johan Wayan Edoardo Jofan Rifano Egy Nadya Fadhila Nur Hanifah Faizin Choirul Umam Farantika, Dessy Fasta Della Fitrotul Husnayaini Fauzi, Moh Mimbar Gleydis Harwida Hadi Suyono Hakim, Muhammad Helmi Harliana Harliana Herry Santosa Hidayah, Firda Roudlatul Imam Machfud Imam Muchlisin, Mochammad Imroatul Fatikha Kurniati Indradi Wijatmiko Ismu Rini Dwi Ari Iza Arfiana Fauziah Januar Gilang Ramadhan Jofan Rifano, Edoardo Kharisma Sabbihatul Mustaghfaroh Lestari, Arum Ayu Lestari, Febbi Sena Lestari, Febbi Senna Lestari, Indah Dewi Lestariningsih Lestariningsih Lestariningsih Lestariningsih Lestariningsih Lestariningsih Lestariningsih M Subhan Anshori Mashudi Mashudi Maulana, Eka Moch. Agus Choiron Moh. Mimbar Fauzi Muhammad Lutfi Ashari Naela Nur Choiriyah Nining Haryuni Peni Nohantiya Peni Nohantiya Pipit Lailatul Rahmania Prawinda, Raras Ayu Rahmat Yanu Sutrisno Ratika Sekar Ajeng Ananingtyas Riyadus Sholichin Rizqi Darma Rusdian Yusron Rizqi Darma Rusdiyan Yusron Sakti, Ragil Ellang Sekar Ajeng Ananingtyas, Ratika Tricahyo, Vion Age Tyas Alhim Mubarok Ulfa Niswatul Vion Age Tricahyo Vion Age Tricahyo Wasimin Wasimin Yeni Ratih Pratiwi Yuniar Alam Zainun Nasikin