scholarly journals How can NGOs support collective action among the users of rural drinking water systems? A case study of Managed Aquifer Recharge (MAR) systems in Bangladesh

2020 ◽  
Vol 126 ◽  
pp. 104710
Author(s):  
Muhammad Badrul Hasan ◽  
Peter Driessen ◽  
Annelies Zoomers ◽  
Frank Van Laerhoven
Keyword(s):  
Drinking Water ◽  
Collective Action ◽  
Water Systems ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
Drinking Water Systems

scholarly journals A Community Management Plus Model for the Governance of Rural Drinking Water Systems: A Comparative Case Study of Pond Sand Filter Systems in Bangladesh

2020 ◽  
Vol 14 (1) ◽  
pp. 662-679
Author(s):  
Muhammad Badrul Hasan ◽  
Peter P. J. Driessen ◽  
Shantanu Majumder ◽  
Annelies Zoomers ◽  
Frank van Laerhoven
Keyword(s):  
Drinking Water ◽  
Water Systems ◽  
Comparative Case Study ◽  
Community Management ◽  
Sand Filter ◽  
Drinking Water Systems

scholarly journals Low Trihalomethane Formation during Managed Aquifer Recharge with Chlorinated Desalinated Water

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 711 ◽  
Author(s):  
Anat Bernstein ◽  
Raz Studny ◽  
Vinolia Shyntychea ◽  
Daniel Kurtzman ◽  
Yonatan Ganot ◽  
...  
Keyword(s):  
Drinking Water ◽  
Vadose Zone ◽  
Large Scale ◽  
Managed Aquifer Recharge ◽  
Small Scale ◽  
Aquifer Recharge ◽  
Unique Case ◽  
Order Of Magnitude ◽  
By Products

Trihalomethanes (THMs) are toxic disinfection by-products, formed in the reaction of chlorine with organic matter. This work aimed to study THM formation during a unique case study of managed aquifer recharge (MAR) with chlorinated desalinated seawater. THM formation was tested in the field, along a 3.0 m deep vadose zone gallery. Two small-scale experiments were conducted in the site, with untreated and with bromide spiked desalinated seawater. These were accompanied by a large-scale, ~1-month long operational MAR event. In the small-scale experiments, THM concentrations were shown to increase with bromide concentrations, with increasing dominance of the brominated species. Nevertheless, concentrations remained within the single µg/L range, which is an order of magnitude lower than drinking water regulations. Such low THM concentrations were also determined in the large-scale event. In both cases, THM formation occurred in the ponding water, without significant formation or degradation in the upper 3.0 m of the vadose zone. This study shows that MAR with chlorinated (<0.5 mg/L) desalinated seawater through sandy infiltration basins does not pose a threat to drinking water quality at this site.

scholarly journals A methodology to assess vulnerability in small communities drinking water systems

RBRH ◽  
2019 ◽  
Vol 24 ◽  
Author(s):  
Ronaldo Debiasi ◽  
Antônio Domingues Benetti
Keyword(s):  
Drinking Water ◽  
Representative Sample ◽  
Water Systems ◽  
The State ◽  
Small Community ◽  
Small Communities ◽  
Vulnerability Indicators ◽  
Community Systems ◽  
Drinking Water Systems

ABSTRACT In many countries, small community systems have an important role as suppliers of drinking water for large part of the population. These systems must be evaluated with respect to their capacity to produce and deliver safe drinking water. As there are thousands of small systems to be evaluated in any given region, it is necessary to develop a procedure for selecting a representative sample, as well as the use of indicators that can provide information about the state of the systems. The objective of this study was to propose and apply a methodology to evaluate the vulnerability of small communities drinking water systems. The methodology includes the application of a statistical method to select a representative sample of systems in a region. It also proposes vulnerability indicators, ratings and an index. As a case study, the methodology was applied to determine the vulnerability of small community drinking water systems in the state of Rio Grande do Sul, Brazil. Data collected with application of the proposed methodology indicated that 67% of the surveyed systems were classified as having intermediate and high levels of vulnerabilities, hence at risk of distributing water that is not safe for drinking.

Protecting Drinking Water Systems from Low Pressure Transients - A Case Study

2013 ◽  
Author(s):  
Don J. Wood ◽  
Gary Williams ◽  
Gewnn Phalempin ◽  
Frank K. Snith, III
Keyword(s):  
Drinking Water ◽  
Low Pressure ◽  
Water Systems ◽  
Pressure Transients ◽  
Drinking Water Systems

scholarly journals The Water Safety Plan Approach: Application to Small Drinking-Water Systems—Case Studies in Salento (South Italy)

2021 ◽  
Vol 18 (8) ◽  
pp. 4360
Author(s):  
Francesca Serio ◽  
Lucia Martella ◽  
Giovanni Imbriani ◽  
Adele Idolo ◽  
Francesco Bagordo ◽  
...  
Keyword(s):  
Drinking Water ◽  
Case Studies ◽  
Distribution Systems ◽  
Water Systems ◽  
Water Safety ◽  
Quality Of Water ◽  
Safety Plan ◽  
Water Safety Plan ◽  
Drinking Water Systems

Background: The quality of water for human consumption is an objective of fundamental importance for the defense of public health. Since the management of networks involves many problems of control and efficiency of distribution, the Water Safety Plan (WSP) was introduced to address these growing problems. Methods: WSP was applied to three companies in which the water resource assumes central importance: five water kiosks, a third-range vegetable processing company, and a residence and care institution. In drafting the plan, the terms and procedures designed and tested for the management of urban distribution systems were applied to safeguard the resource over time. Results: The case studies demonstrated the reliability of the application of the model even to small drinking-water systems, even though it involved a greater effort in analyzing the incoming water, the local intended use, and the possibilities for managing the containment of the dangers to which it is exposed. This approach demonstrates concrete effectiveness in identifying and mitigating the dangers of altering the quality of water. Conclusions: Thanks to the WSP applied to small drinking-water systems, we can move from management that is focused mainly on verifying the conformity of the finished product to the creation of a global risk assessment and management system that covers the entire water supply chain.

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