scholarly journals Price cap regulation and water quality

2021 ◽  
Author(s):  
Thomas Bue Bjørner ◽  
Jacob Victor Hansen ◽  
Astrid Fanger Jakobsen
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Drinking Water Quality ◽  
Control Group ◽  
Price Cap Regulation ◽  
Price Cap ◽  
Limit Values ◽  
Threshold Size ◽  
The Impact

AbstractA number of studies suggest that price cap regulation may reduce the quality of the regulated good. This paper analyzes the impact on drinking water quality of a shift from cost-of-service to price cap regulation in Denmark, using a balanced panel of drinking water companies, for the period 2008 to 2016. The price cap was introduced in 2011 for companies above a certain threshold size. We exploit this quasi-experimental setting to estimate the impact of the shift in regulation using a regression discontinuity difference-in-differences approach. Our measure of drinking water quality is based on results from a compulsory surveillance drinking water testing program, which investigates whether or not water samples contain a level of microbiological content that exceeds limit values. More specifically, we compare the change over time in water quality for a treatment group of 113 companies regulated with price caps that have a size close to the threshold size for being regulated, with the change in drinking water quality for a control group of 282 companies that are below but close to the threshold size. We find that the shift in regulation has not caused a reduction in drinking water quality in Denmark.

scholarly journals The impact of rainfall on drinking water quality in Antananarivo, Madagascar

2019 ◽  
Author(s):  
Alexandra Bastaraud ◽  
Emeline Perthame ◽  
Jean-Marius Rakotondramanga ◽  
Jackson Mahazosaotra ◽  
Noro Ravaonindrina ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Low Income ◽  
Temporal Dynamics ◽  
Drinking Water Quality ◽  
Population Pressure ◽  
Direct Effects ◽  
Climate Conditions ◽  
The Impact

AbstractLow-income cities that are subject to high population pressure and vulnerable to climate events often have a low capacity to continuously deliver safe drinking water. Here we report the findings of a 32-year investigation of the temporal dynamics of indicators of drinking water quality in the city of Antananarivo, where we assess the long-term evolution of supplied water quality and characterize the interactions between climate conditions and the full-scale supply system. A total of 25,467 water samples were collected every week at different points in the supplied drinking water system. Samples were analyzed for total coliforms (TC), Escherichia coli (EC), intestinal Enterococci (IE), and spores of Clostridia (SSRC). Nine-hundred-eighty-one samples that were identified as positive for one or more indicators were unevenly distributed across the series. The breakpoint method identified four periods when the time series displayed changes in the level and profile of contamination (i) and the monthly pattern of contamination (ii), with more direct effects of rainfall on the quality of supplied drinking water. The modeling showed significantly different lags among indicators of bacteria occurrence after cumulative rainfall, which range from 4 to 8 weeks. Among the effects of low-income urbanization, a rapid demographic transition and urban watershed degradation are progressively affecting the quality of supplied water and resulting in the more direct effects of rainfall events.

scholarly journals Increasing of drinking water quality at real water treatment plant by recarbonization process

2012 ◽  
Vol 5 (1) ◽  
pp. 75-79 ◽  
Author(s):  
Anna Luptáková ◽  
Karol Munka ◽  
Ján Derco
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Drinking Water Quality ◽  
World Health ◽  
Surface Source ◽  
The Impact

Increasing of drinking water quality at real water treatment plant by recarbonization process According to the World Health Organization, chemical and microbial contaminants in drinking water will continue in the interest of suppliers of drinking water. The review establishment of new knowledge for drinking water including the potential benefits of the mineral content is necessary. The paper is focused on an assessment of the quality of water from surface source for drinking water preparation and quality of drinking water produced at the real plant. The lab-scale verification of water recarbonization with lime and carbon dioxide was chosen based on the results of full scale plant data analysis. Recarbonization tests were carried out with the raw water and the impact of recarbonization on coagulation process at different coagulant doses was studied. The results show that water recarbonization had adverse influence on the water treatment processes.

Assessing the drinking water quality of educational institutions at selected locations of district Swat, Pakistan

2021 ◽  
Vol 80 (8) ◽  
Author(s):  
Muhammad Salam ◽  
Fakhri Alam ◽  
Md. Nuralam Hossain ◽  
Mian Abdal Saeed ◽  
Tasir Khan ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Drinking Water Quality ◽  
Educational Institutions

scholarly journals Influence of the quality of drinking water supply sources on the formation of the ecologically-dependent pathology of the population of the Republic of Dagestan

2021 ◽  
Vol 15 (4) ◽  
pp. 168-176
Author(s):  
M. G. Daudova ◽  
R. B. Bagomedova ◽  
K. K. Bekshokov ◽  
M. M. Medzhidova ◽  
S. M. Nakhibashev ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Negative Impact ◽  
Kidney Diseases ◽  
Ecological Condition ◽  
Drinking Water Quality ◽  
Chemical Contamination ◽  
The Republic

Aim. Study of the influence of drinking water quality on the ecologically-dependent morbidity of the population of the Republic of Dagestan.Material and Methods. Methods of current and retrospective analysis of regional health indicators and methods of mathematical-statistical and medical-geographical analysis were used. Statistical processing of the results was carried out using the STATISTICA and Excel software packages. When carrying out laboratory studies on the quality of drinking water, we used a Lumex atomic absorption spectrometer "MGA-915MD".Results. Numerous hygiene studies indicate the direct impact of unsatisfactory drinking water quality on the health of a population. The relationship between sanitary and chemical indicators and the incidence rate for a number of nosological forms has been proven. It is generally accepted that human health is influenced by lifestyle factors (working, living and relaxation conditions), heredity and the ecological condition of the area of residence, including the quality of drinking water. Although it is not possible to differentiate the share of the negative effect caused by the consumption of poor quality drinking water but the incidence of certain nosological forms (cancer of the esophagus, gastrointestinal tract and kidney diseases) in the those regions of the Republic of Dagestan under consideration correlates with the characteristics of drinking water.Conclusion. The problem of pollution of water supply sources for the population in the dynamics of the long-term remains a priority concern. The quality and safety of drinking water are decreasing, which cannot but have a negative impact on public health. Correlation linkages between indicators of drinking water quality and oncological morbidity of the population were also established in indicators below the maximum permissible concentrations, which corresponds to a typical logistic model of causal relationships and serves as evidence of the high dependence of health disorders on chemical contamination of water supply sources. 

scholarly journals PIH78 Effect of Hospital Wastes on Drinking Water Quality of KPK Hospitals Pakistan

2012 ◽  
Vol 15 (4) ◽  
pp. A205-A206
Author(s):  
B.S.Z. Bibi Saima Zeb ◽  
D.S.A. Saira Azhar ◽  
Q.M. Qaisar Mahmood
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Drinking Water Quality ◽  
Hospital Wastes

Assessment of drinking water quality of Tehsil Alipur, Pakistan

2014 ◽  
Vol 55 (8) ◽  
pp. 2253-2264 ◽  
Author(s):  
Ramoona Shehzadi ◽  
H.M. Rafique ◽  
I. Abbas ◽  
M. Abdullah Sohl ◽  
Shahid Mahmood Ramay ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Drinking Water Quality

scholarly journals Drinking Water Quality in Urban Areas of Pakistan: A Case Study of Gujranwala City

2016 ◽  
Vol 59 (3) ◽  
pp. 157-166
Author(s):  
Sajjad Haydar ◽  
Obaidullah Nadeem ◽  
Ghulam Hussain ◽  
Haroon Rashid ◽  
Rashid Majeed
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Urban Areas ◽  
Heavy Metal Contamination ◽  
Water Quality Monitoring ◽  
National Standards ◽  
Drinking Water Quality ◽  
Tube Wells ◽  
Before And After

A study was conducted to evaluate the drinking water quality of Gujranwala city. Samples were collected from 16 locations including: 4 tube wells, 4 overhead reservoirs (OHR) and 8 house connections. Twelve physicochemical and two bacteriological parameters were tested, before and after monsoon and compared with National Standards for Drinking Water Quality (NSDWQ). The results demonstrated that most of the physicochemical parameters, except lead, nickle and chromium were within NSDWQ before and after monsoon. Bacteriological and heavy metal contamination was found before and after the monsoon. Possible reasons of contamination are: no disinfection, old and leaking water pipes, poor drainage duringmonsoon and possible cross connections between water and sewerage lines. It is recommended to practice disinfection, laying of water and sewerage pipes on opposite sides of streets and periodic water quality monitoring.

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