The water quality monitoring of selected streams in Prague (which harbour in their catchment area natural bathing places) during 2018–2019 included also the monitoring of two hydrobiological indicators; the phytobenthos and macroinvertebrates communities.
Hydrochemistry, radioecology, microbiology, hydrobiology
The paper provides actual clear information about viruses and coronaviruses, including SARS-CoV-2, the possibility of contamination of surface water and wastewater by this virus.
The article informs about regular, almost two-year long monitoring of municipal wastewater at selected sampling points of the Prague sewerage network. Selected illicit drugs (e.g. methamphetamine, MDMA, THC, cocaine), nicotine and its metabolites and the ethanol metabolite ethyl sulphate are monitored in municipal wastewater.
Social-economic and safety risks in area are one of the main topics in these days, which in the long term affect the stability of local societies. For identification of these risks, we can use modern technology of data collection based on the analysis of illicit substances in city wastewater, as the cities are a high-risk areas from the social perspective in the Czech Republic.
The Clean Water – a Healthy City: The usability of the existing information collection system to fulfillment of goals
The contribution is part of the Clean Water – a Healthy City project, which deals with the prediction of the possible occurrence of hazardous chemicals during the accidental pollution and floods. Lists the databases that are currently on the subject and with their practical applicability.
This paper reports on the structure of the autonomous station for monitoring artificial gamma activity in surface water bodies for the purposes of emergency preparedness of the Czech Republic. A simple design based on the NaI(Tl) submersible detector powered by a combined solar and wind source has been employed.
The First Czechoslovak Republic hydrobiological stations – The beginnings of scientific fish research in Moravia
Field stations represent one of the forms of fishery or fishpond research. Their origins can be found at the end of the 19th century, but this type of research program flourished during the interwar era. At that time, two of the oldest and most important hydrobiological stations in Moravia – Lednice (1922) and Velké Meziříčí (1928) – were established.
This article is available in Czech only. For translation or more information on this topic, please contact author. Souhrn Náhled do historie ukázal, že rekreace u vody, jako záliba k trávení volného času, byla odedávna rozšířena i v Praze, kde byly velmi oblíbené, dnes již zaniklé, říční plovárny. Na historický průzkum navázal v projektu „Možnosti vodní rekreace na území… Read more »
Water quality of the Prague’s streams. Part 2: tributaries to the Šeberák pond and to the Hostivař reservoir
The possibility of a recreational use of some of the Prague reservoirs is limited mainly by the quality of the tributaries. The article follows the previous one and sums up the results of the water quality monitoring in selected profiles of the tributaries of the Šeberák pond (the Vestecký and the Kunratický streams) and of the Hostivař dam (the Botič and the Pitkovický streams) during 2018.
Results of water quality observation in the selected profiles on the Motolský and Litovický streams during the year 2018 are presented. Monitoring of water quality parameters was focused mainly on the nutrients content (nitrogen and phosphorus), chlorophyll-a concentrations and on the phytoplankton and zooplankton species composition.
High eutrophication is the main factor that has recently disabled the Jordán water reservoir for water supply and recreational purposes. Large-scale dredging of sediments was done between years 2011 and 2014. Thereafter a complex monitoring of water quality has been initiated since 2015.
In this article, water quality and the assessment of anthropogenic pollution in sediments of the middle course of the Elbe River oxbow lakes Kozelská and Vrť were studied. It is widely accepted that the oxbow lakes are extremely significant ecosystems. However, a large amount of contaminated material may deposit in these lakes. The research of lake Kozelská was chosen especially to its proximity to the chemical factory Spolana in Neratovice, which used to be the biggest source of pollution of the Elbe River.
This article aims to present to the general public the results of the assessment of the ecological status/potential and chemical status of surface water bodies categories “river“ and “lake“ for the period 2013 to 2015 in the Czech Republic. The assessment was carried out in 2017 by the Water Research Institute of T. G. Masaryk, p. r. i.
Water elements represent a significant part of the environment of cultural heritage sites, conservation zones and areas. To fulfil the required functions, which may include social, historical, recreational and educational, but also environmental functions; it is necessary to ensure their corresponding target state.
Past tests of nuclear weapons in the atmosphere, nuclear energy facilities and tritium of natural origin are main sources of tritium in the environment. Thanks to its presence in environment and its favourable properties, tritium is used as a radiotracer.
The use of automatic samplers for detailed monitoring of substance concentrations and balance is nowadays an important part of special monitoring of surface waters. The average results of routine monitoring (consisting of point samples) are often underestimated over the real situation.
The impact of oxygen and nitrates availability on phosphorus cycle in sediments – an example of the Vranov Reservoir
The inflow parts of eutrophic reservoirs typically exhibit exacerbated rates of primary production, with concomitant increase in organic matter sedimentation. Its microbial remineralization leads to the consumption of electron acceptors.
Based on existing phosphorus data series in the Slapy and Orlík reservoirs and their main tributaries, we reconstructed P inputs to the reservoirs from the catchment during 1961–2016 and compiled empirical models of P retention.
Odra River Alarm Modul (ORAM) will be part of the NAVAROSO project. There are no results of tracer studies of the Czech part of the Odra River in the last twenty years. That´s the reason, why tracer experiment data of the Svitava River were used for analysis.
The paper outlines the possibilities of using the epidemiological approach to the analysis of municipal wastewater to monitor the lifestyle of the population, its dietary habits, the environmental impacts on humans, the assessment of the state of health of the population and monitoring the consumption of illicit drugs and other substances in the monitored population
This article deals with new Czech Standard 75 7221 Water quality – Classification of surface water quality  and replaces the previous 19 years old standard . It was necessary to take into account actual demands of the surface water protection from two points of view: pollution indicator selection and current environmental quality standards. The range of pollution indicators and limit values of water classification were revised.
The aim of this study is a summary of problems dealing with microbial pollution of flowing surface waters in the Czech Republic. Limits of counts of indicator microorganisms in current legislation and technical standards are presented, together with characteristics of the mostly used indicators of faecal pollution and methods of their detection.
Development of selected radionuclides in surface water in the vicinity of the Temelín Nuclear Power Plant in the period 1990–2016
The paper presents results and interpretation of long-term monitoring of occurrence and behaviour of radioisotopes 3H, 90Sr and 137Cs in surface water in the vicinity of the Temelín Nuclear Power Plant. 3H, 90Sr and 137Cs originate predominantly from residual contamination due to atmospheric nuclear weapons tests and the Chernobyl disaster in the last century.
The article presents the results of the project aimed at improving the situation in the catchment area of the Mostiště water reservoir where good water status is not achieved because of the high water load of nutrients.
Testing laboratory is responsible for the sampling for the purposes of the Water Act, the Water Supply and Sewerage Act and the Public Health Protection Act. Requirements for the qualification and further training of samplers are defined by the laboratory in its controlled documentation, while in the case of water sampling; the new minimum requirements are set in the standard ČSN EN ISO 5667-14.
Cooperation of Water Research Institute and Povodí companies, state enterprise within the framework of radiation monitoring network of the Czech Republic
The paper sums up the legislative framework and cooperation of TGM Water Research Institute and Povodí companies, state enterprises.
The importance of catchment characteristics in terms of intensive erosion runoff formation threat level
We located almost 130 000 critical localities near to urban areas where eroded material can enter the urban area. These localities were divided into five threat categories. Detailed modelling by WaTEM/SEDEM provided an extensive database of almost 130 000 micro catchments with outlet profiles threatened by intensive erosion runoff, and classified by five categories of threat for infrastructure damages.
Use of wastewater‑based epidemiology for monitoring of illicit drugs consumption in Czech and international context
This paper presents a brief summary of information about the project Determination of the amount of illicit drugs and their metabolites in municipal wastewater – new tool for obtaining of complementary data on illicit drug consumption in the Czech Republic and about the 2nd International Conference on “Wastewater‑based drug epidemiology“, which was held from 11.–15. 10. 2015 in Ascona, Switzerland.
Water quality in drinking water reservoir Švihov on Želivka river and its river basin, with focus on specific organic compounds
River basin of the largest drinking water reservoir Švihov on the Želivka River is distinctly anthropogenically affected both by direct human activities and also by the agriculture. The quality of the surface water is endangered in long-term period mainly by the eutrophication, pesticides pollution and erosion.
Many professionals deal with water quality monitoring in the Czech Republic with various goals and various quality of gathered information. The Czech Hydrometeorological Institute (CHMI) has built and developed a unified longterm monitoring system providing comparable high quality data at a nation- al scale.
Temporal and spatial changes in concentrations of selected radionuclides (tritium, radiostrontium and radiocaesium) were assessed in the parts of the Vltava and Elbe river basins affected by the operation of the Temelín Nuclear Power Plant.
During 2011–2015 we have studied water springs remaining in big cities. The main objective was verifying the possibility of using local springs as local sources of water in risk situations as failures of water or energy supply systems.
The aim of this study is introduction and practice of chromogenic medium CCA that is prescribed in the amendment of EN ISO 9308-1 standard for detection of Escherichia coli and coliform bacteria in waters with low bacteria background flora.
Small water reservoirs are one of the principal elements of agricultural landscape in the Central European context. The monitoring of the quality of aquatic environment of selected ponds and small reservoirs (SWR) in areas of southern and central Moravia and the Vysočina Region was carried out in 2013 to 2015.
In connection to the assessment of a radiological event, the procedure of rapid determination of the gross beta activity in water was proposed and validated. In cooperation with the radiological laboratories, the method has been tested in practice.