NITRATE (NO3) CONCENTRATION IN WELL WATER AROUND PLANTATIONS IN PALEMBANG CITY

Abstract

Background: Dug well water is one of the main water sources for communities around plantations. Plantation and agricultural activities that use inorganic fertilizers have the potential to increase the levels of nitrate (NO₃) in well water. Nitrate is a chemical compound that may cause cancer. Object: The purpose of this study was to analyze the nitrate concentration in dug wells and the risk of contamination of dug wells due to agricultural activities using fertilizers and pesticides. Methods: This study is an observational study with a cross-sectional design conducted from March to May 2025. The number of parameters examined was the nitrate concentration of 15 dug wells using a grab sampling technique; data on the risk of dug well contamination were collected through observation using a checklist. Furthermore, interviews were conducted to obtain information regarding the use of fertilizers and pesticides. Nitrate concentration examinations were carried out in an environmental laboratory using spectrophotometry, while data were analyzed univariately. Results: The results showed that the types of fertilizers widely used were urea, NPK, TSP, and manure, and to eradicate pests using insecticides. The results of the examination indicated that nitrate concentrations in well water ranged from 0.306 mg/L to 13,590 mg/L, with 53.3% of wells having a low risk of contamination and 46.7% having a moderate risk. Conclusion: The most common type of fertilizer used was chemical (inorganic), while nitrate levels in dug wells were found to be below environmental quality standards, with a low to moderate risk of contamination.