This study analyzes environmental monitoring mechanisms in the impact zones of oil producing and refining enterprises. The paper systematizes modern approaches to monitoring the quality of atmospheric air, water bodies, soil, and groundwater. Particular attention is paid to the regulatory framework of the Russian Federation in the area of environmental monitoring.An analysis of statistical data from the Ministry of Ecology of the Republic of Bashkortostan revealed a consistent trend in environmental law violations. The highest number of violations related to atmospheric air protection were recorded in 2011, 2012, 2021, and 2024. In the area of water use, an increase in violations has been observed over the past four years.The study provides a detailed analysis of environmental quality management algorithms. For atmospheric air, a monitoring system including stationary and route monitoring is considered. Category I enterprises are equipped with automated monitoring systems that transmit data to environmental agencies.Monitoring regulations for water bodies including the development of permissible discharge standards and the creation of a monitoring station system were analyzed. A network of observation wells and regular sampling are used to monitor groundwater and soil.The study identified systemic limitations of current monitoring mechanisms. Key issues include fragmented data and the lack of a unified information space. Existing systems have reactive nature and focus on recording changes that have already occurred. A significant time lag between sampling and management decisions reduces the effectiveness of environmental protection measures. The lack of integration of data on various environmental components makes it impossible to track the transboundary migration of pollutants.The conclusion substantiates the need to modernize the environmental monitoring system. A transition to a proactive model based on the principles of continuous monitoring and mathematical modeling is proposed.The study results can be used to improve regional environmental safety systems. A promising area for further research is the development of an integrated monitoring system for oil-producing regions.

Geospatial analysis of surface water and groundwater quality using GIS in Ishaka subcounty, Bushenyi District, Uganda.

Agricultural landscapes sit at the center of two coupled crises: accelerating degradation of soil functions and persistent impairment of surface and groundwater quality [...]

Comparative hydrogeochemical characterization and environmental controls on groundwater quality, irrigation suitability, and health risk across northern and coastal hydrological settings of Bangladesh

Neglected but pivotal: Complex matter dynamics in the aeration zone contribute to groundwater quality evolution.

Surface water and groundwater suitability assessment for drinking and irrigation in a coal-mining area of southwestern China: EWQI, IWQI, and sensitivity analysis.

Groundwater chemistry and quality of Lower Chalakudy River Basin, India during extreme climatic events: Lessons to understand for evolving future mitigation measures in Western Ghats, India

Impact of coal mining activities on the water quality: A case study of Jharia Coalfield, Dhanbad, India.

Comprehensive assessment of groundwater quality in Moilakanda, Mymensingh City: Insights from water quality indices and multivariate analysis

Per- and polyfluoroalkyl substances-driven enhancement of colloid-facilitated contaminant transport in groundwater.

Spatial distribution of groundwater quality from excellent to unsuitable conditions in rapidly urbanizing Firozabad city of India

Evaluation of radioactivity levels and lifetime cancer risk assessment in drinking water of Dera Ghazi Khan, Pakistan.

Source apportionment of groundwater contamination using integrated PCA-APCS-MLR modeling: A case study of an industrial zone in Southwest China.

Changes in groundwater quality driven by anthropogenic pumping in oasis-desert systems of Northwest China

Hyperparameter optimized feature selected machine-learning models for groundwater quality index – A post-monsoon case study in Jajpur, Odisha, India

Abstract Acid mine drainage (AMD) poses a major risk to groundwater quality in mining regions due to the oxidation of sulphide minerals and the subsequent release of sulphate and heavy metals. This study aimed to assess the transport behaviour of sulphate and copper within the fractured aquifer system of the Dareh-Zar copper mine in south-central Iran, where mining activities have significantly altered local hydrogeological conditions. A three-dimensional numerical groundwater flow and solute transport model was developed to simulate contaminant migration under current site conditions. Sulphate was treated as a conservative tracer, while copper was modelled as a reactive solute influenced by geochemical attenuation mechanisms such as adsorption and precipitation. The model incorporated geological structures, hydrochemical gradients, and depth-dependent hydraulic properties to evaluate contaminant transport behaviour. Results showed that sulphate formed a widespread plume aligned with regional groundwater flow directions and fault zones, while copper remained localised near the source. Transport in upper fractured volcanic units was enhanced due to their higher permeability, whereas plume development was limited in deeper layers with lower hydraulic conductivity. A remediation scenario demonstrated a 27% reduction in annual sulphate loading, decreasing from 2190 to 1597 tonnes per year. These findings highlight the influence of geological structure on solute transport and demonstrate the potential effectiveness of natural attenuation and source control strategies in managing AMD impacts on groundwater systems.

Integrated assessment of groundwater quality for sustainable groundwater management in the Fanteakwa District, Ghana

Hydrochemical Characteristics, Water Quality, and Health Risk Assessment of Groundwater in Zhanjiang Area, Guangdong Province, China

Dumpsite leachate is a major contributor to groundwater quality degradation. The susceptibility of groundwater contamination around an active dumpsite in Rukpokwo was studied. The study correlated geoelectric and water quality parameters. Vertical Electric Sounding (VES) and laboratory analysis of chemical, heavy metals, and microbial constituents were employed. 3 VES points were examined while standard methods were used to analyze pH, electrical conductivity (EC), total hardness, chloride, nitrate, heavy metals, and total heterotrophic bacteria (THB). The results illustrate that groundwater is acidic within 150 m of the dumpsite. EC (20 - 46S/cm) and total hardness (11.6 – 16.4 mg/l) increased with proximity to the dumpsite. Heavy metal concentrations (<0.002-0.098 mg/l) remained within WHO acceptable limits except for chromium at 150 m. Microbial count exceeded WHO limits within 150 m of the dumpsite. Longitudinal conductance values ranged from 0.162 to 0.27m/Ω, indicating weak to moderate aquifer protective capacity, while transverse resistance values ranged from 9751.16 to 27157.95 ῼm^2 indicating low to moderate EC, consistent with groundwater EC values. The results suggest leachate permeation and selective adsorption of the aquifer protective layer. The study highlights the need for proper waste management practices and groundwater monitoring and treatment to safeguard public health.

Addressing the Spatial Distribution of Groundwater Quality Using Hot Spot Analysis in the Urmia Aquifer, Iran