Source Of Water Supply Research Articles

Hydrochemical assessment of groundwater using multivariate statistical methods and water quality indices (WQIs)

Groundwater quality assessment is crucial for the sustainable management of water resources in arid regions, where groundwater is the primary source of water supply and increasing demand raises concerns. The study area in Southwest Algeria relies heavily on groundwater as a source of water supply, and the increasing demand for freshwater raises concerns about the quality of groundwater. To assess the hydrochemical characteristics and water quality of groundwater in the Ain Sefra region, multivariate statistical methods, geochemical modeling and water quality indices were employed. The study revealed that the groundwater samples could be classified into four water groups using hierarchical cluster analysis Q mode (HCA), namely Ca–Mg–HCO3, Ca–Mg–Cl–SO4, Ca–SO4 and Na–Cl. Factor analysis was used to identify the main factors controlling the study area’s hydrochemical processes. The results indicated that water–rock interaction, reverse ion exchange and anthropogenic pollution were the main hydrochemical processes affecting groundwater chemistry. The water quality index indicated that the groundwater was suitable for human consumption, with only 2.32% of the samples being unsuitable. Additionally, the groundwater was suitable for agricultural use, but salinity control was necessary. The saturation index values showed that the groundwater was supersaturated with aragonite, calcite, dolomite, anhydrite and gypsum, and undersaturated with halite. Ca-smectite, Mg-smectite and kaolinite were identified as the primary processes controlling the chemical composition of groundwater. The application of multivariate statistical methods, geochemical modeling and water quality indices provided a comprehensive understanding of the hydrochemical characteristics and water quality of groundwater in the Ain Sefra region. The findings of the study can serve as a useful basis for future studies on groundwater quality assessment in the region.

Investigating the vulnerability of the northern coasts of Iran due to changes in the water level of the Caspian Sea by considering the effects of climate change

Abstract Coastal aquifers are one of the most important sources of water supply, and it is expected that the effects of climate change will be one of their threatening factors in the short or long term. The present study was conducted in the northern coasts of Iran (Amirabad, Babolsar) and the main goal was to investigate the behavior of saltwater advance in coastal aquifers considering the changes in the coastline due to the effects of climate change and aquifer characteristics. In order to simulate the flow of underground water and the advancement of salt water in the coastal aquifer of the Caspian Sea, MODFLOW MT3DMS and SEAWAT numerical models were used in the GMS10.6 software. The results show that there is a salinity increase of up to 60 ppt, which is much higher than the minimum seawater salinity of 2 ppt. According to the results, it is clear that in the studied area, contaminated water entered the underground aquifers, especially in the coastal erosion areas and during the seasons when the sea level changes and when the changes in the coastline increase.

Investigating changes in snow cover in the center of Bamyan province using satellite images

Studying and measuring changes in snow levels is very important as one of the important sources of water supply. Due to the harsh physical conditions of mountainous environments, it is not possible to make permanent measurements on the ground to estimate the sources of blue snow and create a database. For this reason, it is very important to use satellite images to identify snow catchment areas and evaluate its changes. The data used in this study are Landsat 8 satellite images of the OLI sensor in January and March of 2016 and 2023, the center of Bamyan province. The method used in this study is supervised classification using maximum likelihood algorithm. Examining the maps related to changes in snow cover in January showed that during the studied period, the lowest amount of snow cover is for the month of January 2023, which is 1238/34 square kilometers, while in January 2016, the amount of snow cover is 1264/74 square kilometers and the snow cover will reach 1116/11 square kilometers in March 2016 and 1215/72 square kilometers in March 2023 respectively. This issue shows the changes in the amount of snow cover in the central region of Bamyan province during 8 years and shows the vulnerability of water sources related to snow melting in this region.

Long-Term Water Quality Monitoring: Using Satellite Images for Temporal and Spatial Monitoring of Thermal Pollution in Water Resources

Thermal pollution reduces water quality through any process that leads to a change in the water’s ambient temperature. Karun is one of the most relevant sources of water supply in Iran, and its pollution, created by industrial, urban, and agricultural issues, has been one of the most critical challenges throughout the last few years. As the water temperature rises, the amount of dissolved oxygen in it decreases, thereby affecting the entire ecosystem associated with it. Drainage of urban and industrial runoff into surface water sources can increase the water temperature. Dams also constitute a significant part, modifying spatial patterns of temperature along river routes and causing thermal contamination. In this paper, the thermal pollution of the Karun River was assessed, and regions along this river with unusually raised water temperatures were identified and compared over 20 years. By analyzing the results, it can be found that the thermal pollution from dams has a significant impact on the downstream river environment and ecology that is considerably relevant during summer periods, showing average decreases of 3 degrees Celsius immediately beyond the dams’ locations (from 41 degrees Celsius upstream dams to 38 degrees Celsius beyond them) or even bigger (reductions of 13 degrees Celsius in one of the studied dams). Hence, our results showed that water temperature is colder downstream in the hot seasons of the year than upstream of the dams. The results suggest that the usage of remote sensing data effectively could complement collected data from ground-based sensors to estimate water temperature and to identify pollution areas. It provides experts with spatially extensive and highly synchronized data.

ЗАБЕЗПЕЧЕННЯ СТАЛОГО РОЗВИТКУ НА БАЗІ АНАЛІЗУ ТА ОЦІНКИ ХАРАКТЕРИСТИК ШАХТНИХ ВОД ЯК ДЖЕРЕЛ ВОДОПОСТАЧАННЯ ТА ОТРИМАННЯ ЦІННИХ РЕЧОВИН З ВІДХОДІВ ОПРІСНЕННЯ

Purpose. Rationale for the integrated use of the resource potential of coal-mining enterprises, which is aimed at obtaining technical and drinking water for their own production needs, local population and obtaining valuable substances from desalination waste. Methodology. Analysis of world experience, information about aquifer complexes in the Western Donbas mines, conducting chemical analyses of mine waters and salt mixtures obtained after using reverse osmosis products. Results. Based on the accumulated world experience in desalination of highly mineralized waters, it can be concluded that it is possible to effectively implement this experience at mining enterprises. Description of aquifer complexes has been given in detail using the example of the Zakhidno-Donbaska Mine of PJSC “DTEK Pavlohradvuhillia”, chemical analyses of water before and after discharge into settling ponds. A rational technological scheme for desalination, volumes of purified water obtained for drinking and technical water supply, as well as the quantitative and qualitative composition of the dry residue components of mine water desalination waste, and recommendations on possible use of products on the market have been determined. Scientific novelty. Analytical and laboratory studies have been conducted to determine the component composition of mine water desalination waste from Western Donbas coal-mining enterprises. It has been determined that the resulting salt product is a mixture of pure salts and valuable microcomponents, and the resulting distillate is fuel for the operation of hydrogen electrolyzers, which creates prerequisites for modern “green” hydrogen energy infrastructure. Practical significance. The qualitative and quantitative mine water parameters on complex use as an alternative source of water supply and obtaining related reverse osmosis products have been analyzed. The road services propose the consumption of the resulting salt products by municipal enterprises, and the dry distillation residue – to prevent dust. This approach allows solving not only the problem of desalination waste utilization, but also applying the separated valuable substances in the industrial market of food, medical, cosmetic, paint and varnish, chemical, as well as building materials, plastics and polymers production industries. Keywords: mine water, waste recycling, mineral resource, coal-mining enterprises.

ПРОЕКТИРОВАНИЕ СИСТЕМЫ ВОДОСНАБЖЕНИЯ И ВОДООТВЕДЕНИЯ C МИНИМАЛЬНЫМИ КАПИТАЛЬНЫМИ ЗАТРАТАМИ НА ПРИМЕРЕ ТЕПЛОВОЙ ЭЛЕКТРИЧЕСКОЙ СТАНЦИИ

The work is devoted to the design of water supply and sanitation systems for a low-power thermal power plant within the framework of an energy saving policy with minimal capital costs. The purpose of this work was to analyze the station’s needs for water resources, as well as identify sources of water supply with the selection of cost-effective methods of water treatment and recycling. As part of this work, the set goal was achieved through detailed design of the system on the AutoCAD software platform, which made it possible to accurately visualize all elements of the system. The most important and significant result in this work is the calculations and recommendations for optimizing design solutions taking into account economic feasibility. The significance of the results obtained will allow the implementation of these design solutions at mini stations with low power.

ASSESSMENT OF THE ECOLOGICAL STATE OF RURAL SETTLEMENTS BY INDICATORS OF DRINKING WATER QUALITY IN THE CONTEXT OF SUSTAINABLE DEVELOPMENT

The purpose of the study was to assess the state of ecological development of rural rural areas of the amalgamated territorial communities of Zhytomyr district based on drinking water quality indicators of non-centralised water supply sources to ensure their sustainable development. It was found that the average pH value was within the current standard, which indicates an excellent environmental condition for this indicator. The average content of nitrates in drinking water, which in all the studied communities exceeded the standard by 1.4 to 3.5 times, was assessed at only one point. The average concentration of total iron exceeded the current standard by 1.9 times only in the rural settlements of the Liubar community. Satisfactory water quality, in terms of total iron content, was recorded in 50 per cent of the surveyed communities. In 70 per cent of the studied communities, the average value of total hardness was recorded at a level higher than 7.0 mmol/dm3, which indicates, according to European legislation, a poor condition of drinking water. Thus, having assessed the ecological state of rural areas in terms of drinking water quality, it was found that most of the studied communities have a satisfactory state of the territories, as the total number of points varied between 2.25-3.3 points. And the greatest contribution to the decline in the level of environmental development of rural settlements is made by the indicators of nitrate content in drinking water and its hardness.

Ecological and sanitary safety of water supply sources of the Kyrgyz Republic

This article addresses the issue of environmental safety as well as the quality of drinking water and wastewater treatment. The problem of supplying clean water and sewage of settlements and cities of the Kyrgyz Republic is raised. Anthropogenic pollution of natural waters. Inadequate wastewater treatment and unsatisfactory condition of sewage treatment plants. This state of affairs in the water supply and sanitation system of the Kyrgyz Republic requires the development and implementation of new advanced technologies for the treatment of natural and waste waters. Also, the results of this article are aimed at the relevance of scientific research in the treatment of natural and wastewater in the Kyrgyz Republic. Creation and development of innovative technologies, optimization of pumps and pumping units in order to save energy, water treatment, wastewater and collector-drainage water treatment, creation of closed water use systems

Understanding Consumer Choices: Towards Sustainable Water Use in India

This study addresses the pressing issue of water scarcity in India, focusing on sustainable water management and the crucial role of consumer behavior. It establishes a clear correlation between safe water access, economic development, and public health, emphasizing the interconnectedness of these factors. The concept of a water footprint, comprising green, blue, and gray components, provides a framework for analyzing global water usage. The socio-economic context highlights the significance of recognizing water as an economic good for efficient resource allocation. Global water availability is discussed, revealing the inadequacies in freshwater distribution and the widening gap between demand and supply. India's precarious position, given its large population, is underscored. Issues related to water consumption, including reckless groundwater exploitation, emphasize the need for stakeholder involvement and a paradigm shift in water management. The study stresses the urgency of an action plan for sustainable water management, advocating strategies such as storage, conservation, and recycling. Disproportionate water usage in agriculture and urban inefficiencies are addressed, urging modernization and technological advancements. Public engagement emerges as pivotal, with consumer behavior significantly impacting water usage patterns. The study discusses the role of public feedback "report cards" in promoting accountability among service providers, whether private or government-owned. Highlighting growing awareness in India, referencing NITI Aayog's Composite Water Management Index, the study emphasizes the disparity between population and freshwater resources. Groundwater depletion and per capita water use statistics underscore the need for immediate action. The study explores untapped water supply sources, advocating for the reduction of system leakage and promoting rainwater harvesting. The potential of stormwater and wastewater management is discussed, emphasizing the importance of incorporating green infrastructure solutions. In conclusion, the study underscores the significance of studying consumer behavior to enhance water conservation strategies. Recommendations include assessing consumer awareness, understanding utilization patterns, and perceptions affecting economic impact. The research advocates for a paradigm shift in water use and recycling, emphasizing the critical role of consumers in shaping a sustainable water future for India.

Assistance in Designing Citarum River Cliff Protection to Control River Erosion in Atirompe Village, Majalaya District, Bandung Regency

Rivers are often used as a water source for agriculture, transportation, and water supply needs. One of the causes of riverbanks' damage is scouring the cliff's foot, which cannot withstand scouring currents. If not addressed immediately, it will cause more severe damage. Citarum River is one river that passes through Atirompe Village, Majalaya District. The riverbanks in the area have a risk of cliff failure. The study objective was to analyze the problem, design the protection, and calculate the budget. The hydrology and riverbank analysis of the Majalaya River has been performed. The steps are important to analyze the depth and width of the scour caused by the flow of the Citarum River water. Sediment data were collected at three locations, namely the upstream, middle, and downstream of the river segment that will be reviewed. In data processing, to obtain a sediment rating curve, it is necessary to measure the flow velocity, which will later be calculated and used as the flow rate that flows during TSS data collection. Using the HEC – RAS 6.2 software, the calculations with the Ripley Equation were compared to obtain the scour depth. For the design alternative, constructing a steel sheet pile-type cliff protection structure is one form of planning to protect riverbanks. This study also analyzes the recapitulation of the budgeting for protecting the Citarum riverbanks in Atirompe Village, Majalaya District. Using standardized unit price, the total price for the protection is 1,8 billion rupiahs.

Participatory approach and Nature-based Solutions (NbS) as resilience and revitalization strategies in watersheds

In the face of climate change, adopting participatory, integrative, and systemic management approaches capable of regulating hydrological, ecosystemic, and social interactions and redefining urban and rural planning, transitioning from the municipal scale to a micro and sub-basin approach, is crucial to ensure water security and resilience to extreme weather events. The revitalization of watersheds through adaptive management of natural resources, is fundamental because it allows for environmental recovery and conservation, the provision of ecosystem services and water resources for multiple uses. This work aimed to present proposals for the watershed of the Jaú River, São Paulo/BR. In 2022, the city of Jaú was hit by an unprecedented flood, which made it clear the mistakes made in urbanization, especially those related to the occupation of the floodplain by roads and buildings. Through a participatory methodology, with the support of the Tietê-Jacaré Watershed Committee and the involvement of municipalities, the productive sector, and civil society organizations, guidelines were defined to mitigate impacts and prevent new occurrences. Considering that the Jaú River is an important source of public water supply, providing water for more than 57 thousand people, the proposed actions are based on principles of nature-based solutions aiming to maintain the natural properties of riverbeds, maximize permeability, recover riparian forests along watercourses, and ensure appropriate land use and conservation practices..

Health Risk Assessment of Some Heavy Metals in Groundwater Samples in Rada'a City, Yemen

Groundwater is an important source of domestic drinking water supply, and groundwater quality assessment is necessary to reduce pollution to acceptable levels. Therefore, this study aims to determine the concentrations of heavy metals (HM) (Cr, Cd, Cu, Ni, Mn, Fe, and Zn) in the groundwater of Rada'a City and to evaluate the health risk. Groundwater samples were analyzed by inductively coupled plasma optical emission spectrometry (ICP-OES). The following average concentrations (mg/l) were determined in the groundwater 0.01035, 0.01702, 0.043718, and 0.03652 for Cu, Ni, Mn, and Zn were concentration values lower than the World Health Organization acceptable limit (WHO) 2, 0,07,0.4, and 4 for Cu, Ni, Mn, and Zn, respectively, but at some locations in the study area, concentration values were found to be above the acceptable limit 0.3 (mg/l) for Fe, the average concentrations were 0.42567 (mg/l). Based on the HM concentrations, the health risk was classified as non-carcinogenic. The health risk indices (HRI) were < 1 for all HMs in the groundwater samples, indicating no health risk. In addition, a high carcinogenic risk (Probability of Cancer Risk, PCR) of 4.42 × 10−4 on average was found from drinking water consumption, while the acceptable range for cancer risk is ≤ 1 × 10−6 to 1 × 10−4.

Geo-physical attributes of Shushunia’s aquifer, Chhatna block, Bankura district, West Bengal, India

Shushunia hill lies in a transitional zone of the South Singbhum Mobile Craton and northern Gondwana formation. The Shushunia hill appears like a porcupine peak and it has structural similarity to the Eastern Ghat. The Shushunia hill zone is an example of a contact spring. In the foothill zone, two perennial springs are observed. The study purely deals with its aquifer and water quality. Based on the present rock strata and the nature of the contact aquifer, its early condition has been assumed. The discharge of the confined aquifers occurs by leakage. The water temperature depicts the springs are not of geothermal origin. Shushunia's aquifer is the shallow flow system water table and it is the subdued replica of surface topography. The comparatively high discharge rate during post-monsoon indicates the fractured conduit-water seepage towards the aquifer. Moreover, twin-contact aquifers do not yield water uniformly. The perennial aquifer may act as a municipal water supply source for drinking purposes in the future.

Levels of Access to Water and their Impacts on The Quality of Life

Structured abstract: to evaluate the effects of different conditions of accessibility to drinking water in rural population. Purpose: the way in which water is supplied at home directly influences the health of its inhabitants. In 2017, eight out of ten people living in rural areas did not have access to basic drinking water services or safely managed water services, of which nearly half lived in least developed countries and rural areas. Method/design/approach: a systematic review was carried out, through metadata analysis, selection of methodologies adopted and the relationships established by the authors between different conditions of access to water and hygiene and health, well-being, water quality, time and cost. The main methodologies adopted are questionnaires and univariate statistical analysis, applied in an associated or not. Results and conclusion: the closer the rural household is to the water collection point, the better the conditions for developing their productive activities. High indoor plumbing costs, especially for individual catchment solutions, may force some households to use unsafe sources of water supply. It was possible to identify the impacts of the lack of internal plumbing and the difficulty of accessing water in rural communities. Research implication: understand and highlight the relationship between internal plumbing and its possible effects on humans, especially in rural areas. Originality/value: it can provide subsidies for public policies on internal plumbing, assisting in the construction of indicators that guide the elaboration and evaluation of these policies.

Efficient removal of toxicity associated to wastewater treatment plant effluents by enhanced Soil Aquifer Treatment

The regeneration of wastewater has been recognized as an effective strategy to counter water scarcity. Nonetheless, Wastewater Treatment Plant (WWTP) effluents still contain a wide range of contaminants of emerging concern (CECs) even after water depuration. Filtration through Soil Aquifer Treatment (SAT) systems has proven efficient for CECs removal although the attenuation of their associated biological effects still remains poorly understood. To evaluate this, three pilot SAT systems were monitored, two of them enhanced with different reactive barriers. SATs were fed with secondary effluents during two consecutive campaigns. Fifteen water samples were collected from the WWTP effluent, below the barriers and 15 m into the aquifer. The potential attenuation of effluent-associated biological effects by SATs was evaluated through toxicogenomic bioassays using zebrafish eleutheroembryos and human hepatic cells. Transcriptomic analyses revealed a wide range of toxic activities exerted by the WWTP effluents that were reduced by more than 70% by SAT. Similar results were observed when HepG2 hepatic cells were tested for cytotoxic and dioxin-like responses. Toxicity reduction appeared partially determined by the barrier composition and/or SAT managing and correlated with CECs removal. SAT appears as a promising approach to efficiently reduce effluent-associated toxicity contributing to environmental and human health preservation.

Analysis of the potential of the city of Pokrovsk for the accumulation and use of atmospheric precipitation

The problem of water shortage in the city of Pokrovsk, Donetsk region, requires the search for alternative sources of water supply, especially for the needs of industry and agriculture. Atmospheric precipitation is considered as an alternative source. However, at the stage of choosing and developing a method of managing rainwater from an urbanized area and implementing technical means for its accumulation, storage, and use, it is important to assess the quantitative indicators of stormwater runoff. Research is aimed at substantiating the possibility of using atmospheric precipitation as an auxiliary source of water supply for industrial-communal, domestic, and agricultural needs based on statistical determination of the dynamics of precipitation on the territory of the city of Pokrovsk. Changes in rainwater runoff parameters were determined based on the analysis of the meteorological data archive for the period 1985–2022.The study found that the city of Pokrovsk has the potential for wastewater accumulation. The city has a tendency to increase the frequency of high-intensity storms with a 34.89% increase in the average height of the precipitation layer for one abnormal rainy day. Over the period 2004–2022, the average annual and annual rainfall per rainy day increased slightly by 0.56% and 6.23%, respectively, compared to the same period in the previous year (1985–2003), while the average number of rainy days per year decreased by 5.25%.The dynamics of annual volumes of surface wastewater indicates the need to improve the city's rainwater accumulation system, which should provide a 35% increase in the current flow rate of abnormal rainfall and eliminate the risk of flooding. To do this, the storage capacity should be increased by deepening the city pond "Nulyovka" and the ridge located downstream. It is expedient for private households to create individual sediment accumulators.

Assessment of health impacts of quality water provisioning from groundwater sources: a micro-level study in India

Abstract Many nations have implemented policies to improve drinking water quality, but challenges arise from overexploited or contaminated groundwater-based sources. This paper aims at examining the aspects of water scarcity, security, and sustainability within an Indian village context. We attempt to compare two rural water supply sources in Nagla Chandi village in Uttar Pradesh, India: (a) untreated groundwater sourced from bore wells and (b) treated water from a reverse osmosis (RO) plant. We observed that subterranean minerals are the primary pollutants of unprocessed water drawn from borewells, which form the main source of drinking water. Even though water from the RO plant meets all the quality parameters of potability, frequent breakdowns of the plant due to improper management force the villagers to drink untreated water from the dug wells fitted with hand pumps, affecting their health. We also found a high incidence of water-borne diseases. The case analysis suggests enhancing village water treatment projects by training local artisans in system repair and increasing Panchayat staff to include trained engineers for technical advice and maintenance. The paper proposes reducing water testing cost in rural areas to make it possible Q4 for local organizations to regularly assess water quality and implement corrective actions.

Investigating the Residue of Diazinon, Chlorpyrifos, and Dichlorvos in Urban Drinking Water Supply Sources and Determining the Water Quality Index in Tirano-Korun in 2020

Introduction: Contamination of water sources with toxins is an environmental problem and a serious threat to the health of societies. This study aimed to ascertain the remaining levels of toxins in urban drinking water networks and compute the water quality index.
 Materials and Methods: To examine the residual concentration of diazinon, chlorpyrifos, and dichlorvos in urban drinking water distribution networks, 35 underground and surface water sources were sampled in Tiran-o-Korun in Isfahan province, Iran. GC-ECD device was used to analyze the samples.
 Results: Diazinon was not observed in any of the sampling seasons. The maximum concentration of chlorpyrifos and dichlorvos was 61 and 100 ppb, respectively. Although chlorpyrifos was seen more in the hot season and dichlorvos in the cold season, the mean concentration of these toxins in different seasons was lower than the guidelines of Iran and the World Health Organization (WHO). The mean concentration of nitrate, and hardness, in wet and dry seasons was 46.23 and 46.42, and 343.7 and 338.8 mg/l, respectively.
 Conclusion: The mean and standard deviation of quality index of Iran's water resources (IRWQI) in wet and dry seasons were 52.16 ± 45.3 and 50.69 ± 15.8, respectively. The residual concentration of toxins in some water sources of this city exceeded the guidelines of Iran and the WHO in summer and spring.

Identifying sources and transformations of nitrate in different occurrence environments of carbonate rocks using a coupled isotopic approach (δ15N, δ18O, 87Sr/86Sr) in karst groundwater system, North China

Karst water as the vital water supply source is an increasingly serious problem suffering from NO3− pollution. Identifying sources and transformations is the key to effectively controlling diffuse NO3− pollution. In this study, 25 karst groundwater samples were collected from the Xujiagou karst groundwater system in June 2023, and chemical variables and stable isotopes (δ15N, δ18O, 87Sr/86Sr) were determined in different occurrence environments of carbonate rocks (exposed, covered, and buried carbonate rock areas). The results showed that the karst groundwater is dominated by nitrification. Human activities have affected the water quality of karst groundwater. The nitrate concentration ranged from 5.69 to 124.22 mg/L, and 4 % exceeds the quality indexes of class III water in China's standard for groundwater quality (20 mg/L as NO3−-N). NH4+ in fertilizer, manure and septic waste, and soil N were the main sources of nitrate pollution in the karst groundwater system. The distribution of NO3− sources is closely related to land-use types. Soil N (72.2 %) became the dominant nitrate source in the exposed area due to the small amount of urban land and the large distribution of forest and grassland. There were more cultivated land and large agricultural activities in the covered area, NH4+ in fertilizer (59.1 %) contributes the most to NO3− sources. The buried area dominated by urban land, the influence of human activities (densely population and agricultural production activities) caused the highest concentration and coefficient of variation of nitrate in this area, and manure and septic waste (64.2 %) were the most to NO3− sources. This study can provide an important scientific basis for the protection of karst groundwater, and provide theoretical support for the treatment of karst groundwater pollution sources in the “monoclinic paraclinal” strata in northern China.

The impact of full-scale armed conflict on water bodies as water supply sources

Water resources are the basic component of sustainable development of the country. Water resources are unevenly distributed across the territory of Ukraine, most settlements and enterprises located in the northern, eastern and southern regions use surface water for water supply. The armed conflict on the territory of Ukraine directly and indirectly affects the state of water bodies, as well as the provision of basic human needs - clean drinking water. With the beginning of conflict on the territory of Ukraine in 2014, water resources regularly suffer from russian terrorist actions. The aggressor uses water resources as natural obstacles, uses the destructive effect of water to kill Ukrainians and cause maximum damage to Ukrainian economy. Also, the destruction of the water treatment and water supply system is used by russian troops as a means of pressure creating water scarcity and terrible sanitary conditions in populated areas. The impact on water resources during armed conflicts in different parts of the world have common features and significant features depending on the level of the conflict and the technology of the water supply system itself. First of all, the impact of armed conflicts on water resources is direct and indirect. The direct impact on water resources as water sources is the direct destruction of water reservoirs, water intake structures and water pipes, contamination of water bodies with the remains of sunken military equipment, mines and chemicals released into the water during the decomposition of weapons. Indirect impact on water sources is in some cases more threatening than direct. The destruction of containers with oil products, chemical substances, fertilizers, which with rainwater or directly fall into water bodies, has much greater damage than the direct impact of sunk military equipment. Forest and meadows fires and other surface cover damages lead to the reduction of the lag time to the river on the catchment area, floods increasing, flooding of larger areas, increasing amount of litter, chemical pollution, and plastics in the rivers. In most of the military conflicts described in the literature, a significant deterioration of water quality in rivers is noted, associated with the discharge of both domestic and industrial wastewater. There is the destruction of wastewater treatment plants, the inability to deliver chemicals for treatment, the inability to control unauthorized discharges of wastewater leads to the contamination of the surface water sources. The report analyses the results of surface water quality researches which officially published by the Water Resources Agency of Ukraine and other governmental and scientific organizations. Monitoring of the surface water quality is carried out on the controlled part of the Ukraine, it is not yet possible to assess the consequences of armed conflict and russian activities on the captured territories.