A Study of Sensitivity of Ceriodaphnia affinis Lilljeborg to Tap Water of the City of Kiev

Doubt about the quality of tap water, due to its color, taste and unpleasant odors, forces a large part of the population of the city of Daloa (west-central of Cote d�Ivoire) to turn to spring and traditional wells waters whose quality is unknown. This study aims to assess the level of nitrate pollution of these shallow aquifers through 29 points including 9 spring and 20 traditional wells spread all over the city. Nitrate concentrations range from 2.5 mg/L to 301.1 mg/L, with 30% of the wells containing an excess of nitrate, beyond the WHO drinking standard (50 mg/L). The map of levels of nitrate concentrations in the city�s wells and springs shows the exposure of the populations of the old downtown neighborhoods to a high health risk due to the high pollution potential of nitrate in the water.

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The antibiotic resistance of heterotrophic bacteria in tap waters in London

Water Science & Technology Water Supply ◽

10.2166/ws.2018.065 ◽

2018 ◽

Vol 19 (1) ◽

pp. 179-190

Author(s):

R. Destiani ◽

M. R. Templeton

Keyword(s):

Antibiotic Resistance ◽

Stenotrophomonas Maltophilia ◽

Heterotrophic Bacteria ◽

Tap Water ◽

Antibiotic Resistance Genes ◽

Resistant Bacteria ◽

Opportunistic Pathogens ◽

Antibiotic Resistant ◽

Sampling Locations ◽

The City

Abstract This study assessed the occurrence and prevalence of antibiotic-resistant bacteria (ARBs) and antibiotic resistance genes (ARGs) in tap water sampled across London, United Kingdom. Sampling was conducted seasonally from nine locations spread geographically across the city. ARBs and ARGs (tet(A), dfrA7, and sul1) were detected in all sampling locations in all sampling rounds. Resistance to trimethoprim was the highest among the tested antibiotics and the sul1 gene was the most abundant resistance gene detected. Several opportunistic pathogens were identified amongst the ARBs in the water samples, including Pseudomonas aeruginosa and Stenotrophomonas maltophilia.

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Monitoring of trace element content in tap water from Karachuny Reservoir, Kryvyi Rih city

E3S Web of Conferences ◽

10.1051/e3sconf/202016601005 ◽

2020 ◽

Vol 166 ◽

pp. 01005

Author(s):

Viktoriia Stoliarenko ◽

Marina Chernova ◽

Olga Yakovchuk

Keyword(s):

Trace Elements ◽

Drinking Water ◽

Trace Element ◽

Tap Water ◽

Trace Element Content ◽

Element Content ◽

Monthly Basis ◽

Industrial Regions ◽

The City ◽

Inversion Voltammetry

Control of the trace element content in tap water is particularly important for large industrial regions. The estimation of Cd, Pb, Cu, As, Ni, Zn, Mn, Hg, Se and Co concentration in the tap water of Kryvyi Rih city (Karachuny Reservoir) was accomplished using electrochemical methods, the most popular methods for determining the content of trace elements in natural objects and tap water. A simple and rapid method to determine trace elements in the tap water (Kryvyi Rih city) by inversion-voltammetry has been used. The concentration of trace elements was measured by voltammetricanalyzer AVA-2 device that implements the method of inversion voltammetry on a solid rotating electrode made of carbon material. The monitoring of the trace element content in the water of the Karachuny reservoir was carried out on a monthly basis between September 2018 and August 2019. The article presents the obtained voltamperograms of some trace elements, describes content of the trace element in tap water during the year (12 data for each trace element) and analyzes the compliance of drinking water in the city of Kryvyi Rih to the standards and normative indicators of drinking water quality.

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Influence of Adverse Ecological Factors on the Incidence of Malignant Neoplasms

E3S Web of Conferences ◽

10.1051/e3sconf/202122702001 ◽

2021 ◽

Vol 227 ◽

pp. 02001

Author(s):

Izimbet Turdimambetov ◽

Amet Madreymov ◽

Lorant Foldvary ◽

Medetbay Oteuliev ◽

Murat Kurbanov ◽

...

Keyword(s):

Tap Water ◽

Ecological Factors ◽

Incidence Rates ◽

Chemical Pollution ◽

Malignant Neoplasms ◽

Well Water ◽

Moderate Correlation ◽

Strong Connection ◽

The Republic ◽

The City

An analysis of the leading sanitary-ecological factors of the environment affecting the incidence rates among the population of the Republic of Karakalpakstan in 2009-2018 found that between the indicators of the primary incidence of malignant neoplasms and water samples of open reservoirs that are not standard in chemical composition, strong direct correlations in the Northern (rxy = 0.89) zone, average direct correlations in the Western (rxy = 0.67) and Central (rxy = 0.57) zones were established. Similarly, strong connection was found in the Chimbay (rxy = 0.73) district, moderate correlation in Nukus (rxy = 0.44) and Ellikkala (rxy = 0.66) districts. The moderate correlation of the dynamics of malignant neoplasms with indicators of chemical pollution of tap water in the Chimbay (rxy = 0.33) district, well water in Kanlykul (rxy = 0.32) and atmospheric air in the city of Nukus (rxy = 0.41) was revealed and in the Republic of Karakalpakstan (rxy = 0.39). The solution to the problem lies in providing for the population of the selected districts with centralized drinking water that meets the state standard.

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Research of tap water quality parameters in the city of kherson by chemical methods

Water bioresources and aquaculture ◽

10.32851/wba.2019.2.10 ◽

2019 ◽

Vol 2 ◽

pp. 134-143

Author(s):

O.V. Ohrіmenko ◽

◽

T.A. Bila ◽

Ye.V. Liashenko ◽

◽

...

Keyword(s):

Water Quality ◽

Tap Water ◽

Quality Parameters ◽

Water Quality Parameters ◽

Chemical Methods ◽

Tap Water Quality ◽

The City

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WATER QUALITUY ASSESSSMENT IN NATURAL SPRINGS IN LVIV

Bulletin of Lviv State University of Life Safety ◽

10.32447/20784643.20.2019.16 ◽

2020 ◽

Vol 20 ◽

pp. 106-109

Author(s):

K. Stepova ◽

K. Musiy ◽

I. Dumas

Keyword(s):

Water Supply ◽

Water Samples ◽

Tap Water ◽

Water Hardness ◽

Freshwater Ecosystems ◽

Spring Water ◽

Ammonium Ion ◽

Raw Water ◽

Natural Sources ◽

The City

Abstract. The main purpose of freshwater ecosystems is to provide drinking needs meeting the water quality requirements for health. Pure raw water is needed not only for drinking, but also for many technological purposes. Good raw water causes the reduce of water treatment costs. Therefore, the quality of water in natural sources is an important factor not only for drinking water supply or for achieving higher economic impact of production, but it also contributes to the development of biodiversity, which is beneficial for the environment and society. Water supply of Lviv is provided exclusively from underground sources located at a distance of 20 to 80 km, so it is of high quality everywhere, but differs in chemical composition, and properties. However, it is widely believed that water from natural sources is better than tap water. In the territory of Lviv, Bryukhovychi and Vinnyky there are more than ten such springs, water from which is used by the inhabitants of the city and villages. The aim of the work is to determine whether the water from springs located in the city is suitable for drinking needs. As a result of the conducted research, it was found that water from springs located in Lviv is not suitable for drinking. According to the research results, in all spring water samples the content of calcium and magnesium is significantly higher than in the sample taken from the city water supply network. The total water hardness in all sources exceeds MPC. The content of sulfates, chlorides, nitrates, nitrites and ammonium ions in all spring water samples is much higher than in tap water. The content of total ammonium ion in water from source # 3 almost reaches the limit of MPC (0.95MPC). Lead content in all samples taken from springs exceeds the MPC.

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Changes in The Content of Biodegradable Organic Matter in Tap Water in The City of Częstochowa / Zmiany Zawartości Biodegradowalnej Materii Organicznej w Wodzie Wodociagowej Dla Miasta Częstochowy

Civil and Environmental Engineering Reports ◽

10.1515/ceer-2016-0009 ◽

2016 ◽

Vol 20 (1) ◽

pp. 89-100

Author(s):

Klaudia Rakocz ◽

Agata Rosińska

Keyword(s):

Organic Carbon ◽

Treatment Process ◽

Tap Water ◽

Underground Water ◽

Water Disinfection ◽

Organic Carbon Content ◽

Pumping Stations ◽

Disinfection Process ◽

Stability Of Water ◽

The City

Abstract This paper presents research aimed at the assessment of biodegradable organic carbon content changes (BDOC) during water disinfection process. The water samples examined in the research came from intakes, pumping stations at treatment plants situated in the Silesia district and water consumers. The examined water was underground water. One water sample was disinfected by sodium sub chloride while the other one by ozone. BDOC was determined using the Joret method, which involves observation of dissolved organic carbon (DOC) decrease in the examined water. The research has shown that BDOC content fluctuates at every stage of the treatment process and distribution of the examined water. Another analyzed parameter was biological stability of water.

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A Hazard Assessment Method for Waterworks Systems Operating in Self-Government Units

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph16050767 ◽

2019 ◽

Vol 16 (5) ◽

pp. 767 ◽

Cited By ~ 8

Author(s):

Janusz R. Rak ◽

Barbara Tchórzewska-Cieślak ◽

Katarzyna Pietrucha-Urbanik

Keyword(s):

Critical Infrastructure ◽

Tap Water ◽

Assessment Method ◽

Water Safety ◽

Risk Matrix ◽

Factors Affecting ◽

The City ◽

Financial Losses ◽

Special Protection

Informing users of waterworks systems about the quality of tap water is an obligatory trend. It should be accompanied by studies on the influence of the risk of threats on public health. Waterworks systems, being included in a critical infrastructure of the city, should be subject to special protection in this respect. In the paper, the authors’ method of assessing threats to people and property from waterworks systems functioning in self-government units (SGUs), is proposed. Four categories of factors affecting the risk of threat to tap water consumers were assumed: the frequency or the probability of exposure—P, financial losses—C, damages to peoples’ health—HL, the degree of the security—S. Based on this, a four-parametric risk matrix was developed. It was assumed that risk is a function of the parameters mentioned above: r = f(P, C, HL, S). For every parameter the five-parametric weight scale was assumed. An example of applying the method is presented. The proposed method should be an important element of water safety plans. It can also be adopted for other municipal systems subject to SGU.

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