Monitoring of pesticides in drinking water: finding the right balance between under- and over-monitoring – experience from the Czech Republic

Author(s):  
Filip Kotal ◽  
František Kožíšek ◽  
Hana Jeligová ◽  
Adam Vavrouš ◽  
Daniel Gari Wayessa ◽  
...  

The modern, risk-based approach requires that only those pollutants which are likely to be present in a given water supply should be monitored in drinking water. From this perspective, defining...

2019 ◽  
Vol 14 (No. 2) ◽  
pp. 76-83
Author(s):  
Jan Gregar ◽  
Jan Petrů ◽  
Jana Novotná

Švihov dam, the largest drinking water source in the Czech Republic and Central Europe, has problems with eutrophication. The Švihov dam catchment spreads over 1200 km<sup>2</sup> and supplies over 1.5 million people in the capital of Prague and the Central Bohemian region with drinking water. Due to intensive agricultural activities and a lack of wastewater treatment plants in small settlements, the water quality is deteriorating. As a result, corrective measures need to be taken. Technological Agency of the Czech Republic supported this research which proposes different scenarios for a reduction of water quality degradation in the dam. The Trnávka dam watershed was chosen for study purposes as it occupies one quarter of the Švihov dam watershed. Hydrological balance was established using measured data. Point and non-point sources of nutrients were determined by field research and included in a Soil and Water Assessment Tool (SWAT) model. This study aims to propose complex watershed management to improve the state of the environment in the entire area and to reduce eutrophication. Different management practices would reduce nutrient loads of streams and increase water quality which is the critical factor in dam eutrophication. This research brings methodology and systematic approach to integrated management, and can be applied not only for the Švihov dam, but also for other watersheds, including those which function as drinking water supply.


Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2098
Author(s):  
Jan Kopp ◽  
Lucie Kureková ◽  
Pavlína Hejduková ◽  
David Vogt ◽  
Tomáš Hejduk

Repeatedly occurring droughts in the Czech Republic in previous years have heightened the need to answer questions concerning the provision of drinking water in small municipalities in the context of their development. The goal of the research was to assess what mutual relationships exist between insufficient drinking water supply and the socio-economic level of municipalities with less than 2000 inhabitants. The basis of the study is formed by data collected via a questionnaire survey of the mayors of 2110 municipalities. For the purposes of the analysis, the Drinking Water Supply Threat Index (DWSTI) composite indicator was established. Subsequently, the effect of selected factors on DWSTI was determined via correlation and regression analysis, and results were compared for two size groups of municipalities indicate water supply problems. The digging of new wells for individual needs is seen to be the most significant signal of problems. The absence of water supply infrastructure results in a heightening of the socio-economic deprivation of small municipalities, as it limits new building and becomes a limitation to their development. A solution is possible based on regional or trans-regional financial and managerial support of development together with an active approach on the part of municipalities.


Author(s):  
Teguh Taruna Utama

Drinking water sources in Manggarai Regency are mostly supplied from springs. Golo Wua and Golo Watu are two villages in Manggarai Regency that utilize springs. About 12.06 liters/second of drinking water are needed by residants in those villages. This study addresses to forecast the demand of drinking water. This study found that pressure values in manual calculations range from 1.85 meters to 84.22 meters. The minimum pressure requirements from BPP-SPAM is 7 meters (0.7 bar). While the simulation results using the EPANET program, the pressure value is at 1.90 meters up to 84.22 meters. Therefore, the pipe diameter selection is appropriate and the pressure meets the requirements of the BPP-SPAM. Difference between pressure values less than 5% indicates that the selection is the right pipe diameter. Choosing the right pipe diameter will optimize the distribution network in the villages of Golo Wua and Golo Watu. The selected pipe is HDPE type. Selected pipe diameter 1½"; 2"; 2½”; 3"; 4 and 5". The pipe has a pressure resistance of up to 125 meters.


Author(s):  
Eva Hýblová ◽  
Jaroslav Sedláček ◽  
Zuzana Křížová

One of consequences of the substantial market globalization is company transformations, which essentially affect the creation, existence or dissolution of companies; their number has been on the increase in recent years. They are mergers and acquisitions; mergers represent a combination of companies, whereas acquisitions involve selling, purchase or investments of companies. The main reason for a merger is economic growth which can be provided in various ways: these are e.g. decreases in costs, strengthening of a position in the market or access to new markets, decrease in prices and thus gaining new customers, access to knowledge or diversification of risks.The process of a merger is a highly demanding matter which includes the economic view (a choice of the right partner, setting merger objectives, preparation of merger project) and the legal view as the merger involves commercial law, reporting and taxation legislation. Discrepancies in the legal, reporting and taxation procedures in the area can have a negative effect on the process of merger and economic practice. The development of mergers and acquisitions and their success rate is related to the development of the economic and legislative environment. An important aspect is also the successfulness of mergers in the following year which will confirm (or not) the quality of all previous decisions.Research studies conducted in this field focus on mergers with the aim to evaluate procedures during mergers. An important part of research is an analysis of the effect of a merger on the evaluation of the successor company’s performance, changes in capital and capital structure of the entities. The aim of the paper is to publish first partial results in this direction of research. The first part of the research focuses on the creation of a database of companies as this is essential for practical verification of the results of the theoretical research. Due to the fact that there is no similar official statistics in the Czech Republic, its creation needs to be devoted great attention. It is also vital to define the transactions which will be included in the total number so that the results are relevant.


2018 ◽  
Vol 2 ◽  
pp. e26375
Author(s):  
Ivo Macek

In 2018 the National Museum Prague (NMP) is celebrating its 200th anniversary. Today the Museum is facing its most valuable development: brand new permanent exhibitions. Our monumental historic building was constructed in 1891 in the heart of Prague. After more than one hundred years we had to close the building and remove all exhibitions which were older than 40 years. The building has about 8,000m2 and is divided into two parts. One belongs to our Natural History Museum (NHM) collections with Zoology, Palaeontology, Mineralogy, Botany and Mycology exhibitions. Our new natural history galleries will open in autumn 2019. Housed all on one floor, the galleries will be full of animals like invertebrates, fishes, reptiles, birds and mammals. The second floor will focus on palaeontology spanning more than 500 million years of evolution covering the geographical area of the modern Czech Republic. At the beginning we had to ask ourselves a few simple questions. How do we develop permanent exhibitions that will last for decades? Is excluding modern technology the right thing to do? Should we focus on a more informative/education style or should the interpretation be more populist? And what about the display cases? Should we use old repaired ones or modern cases? It would be great to have answers to all these questions but we still have to deal with the vision and constraints of our curators, collections, budget, legislation, technology and construction of the building. The project has no similar equivalent in the history of the Czech Republic so it was an extraordinary challenge to create our own process of developments with ongoing improvements. Through these developments we have formed new cooperation with technological partners and the creative industries. We are defining a new modern approach to the development and preparation of exhibitions in the Czech Republic. Now that we have reached the half way point towards our vision, it is a good time to report on progress.


2021 ◽  
Vol 900 (1) ◽  
pp. 012039
Author(s):  
V Singrova ◽  
P Hlustik

Abstract Combined mixing and aeration systems are not given priority in the Czech Republic. Still, they are installed at several WWTPs. Their advantage is mixing and aerating at the same time. This article provides data from actual measurements where a combined system was used for drinking water including necessary chemicals. The text below evaluates the course of changes in the concentration of dissolved oxygen in different points in the reactor depending on time.


2008 ◽  
Vol 22 (3) ◽  
pp. 496-517 ◽  
Author(s):  
Jiří Večerník

The article describes the development of Czech policy after 1989 and the controversies it caused. It first looks at the ambiguous nature of the communist welfare state and then proceeds to outline the theoretical alternatives. After early and energetic changes in the system, stagnation set in around the mid-1990s. Despite some problems, the current performance of the system is satisfactory, but its outlook in terms of long-term efficiency is unsatisfactory, as it will generate a rising debt into the future. In particular, the disadvantaged situation for families, the insufficient work motivation, and the frozen pension system are all causes for concern. The political shift to the right after 2006 ushered in reform measures and new reform plans. While reforms are necessary, their feasibility is uncertain owing to the fragility of the Czech political scene.


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