scholarly journals Where Does the Chilean Aconcagua River Come from? Use of Natural Tracers for Water Genesis Characterization in Glacial and Periglacial Environments

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2630
Author(s):  
Sebastián Crespo ◽  
Céline Lavergne ◽  
Francisco Fernandoy ◽  
Ariel Muñoz ◽  
Leandro Cara ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Water Supply ◽  
Natural Water ◽  
Seasonal Variations ◽  
Water Security ◽  
Water Source ◽  
Buffering Effect ◽  
Water Genesis ◽  
Different Water Sources ◽  
Over Time

The Aconcagua river basin (Chile, 32 °S) has suffered the effects of the megadrought over the last decade. The severe snowfall deficiency drastically modified the water supply to the catchment headwaters. Despite the recognized snowmelt contribution to the basin, an unknown streamflow buffering effect is produced by glacial, periglacial and groundwater inputs, especially in dry periods. Hence, each type of water source was characterized and quantified for each season, through the combination of stable isotope and ionic analyses as natural water tracers. The δ18O and electric conductivity were identified as the key parameters for the differentiation of each water source. The use of these parameters in the stable isotope mixing “simmr” model revealed that snowmelt input accounted 52% in spring and only 22–36% during the rest of the year in the headwaters. While glacial supply contributed up to 34%, both groundwater and periglacial exhibited a remarkable contribution around 20% with some seasonal variations. Downstream, glacial contribution averaged 15–20%, groundwater seasonally increased up to 46%, and periglacial input was surprisingly high (i.e., 14–21%). The different water sources contribution quantification over time for the Aconcagua River reported in this work provides key information for water security in this territory.

Linking Forest to Faucets in a Distant Municipal Area: Public Support for Forest Restoration and Water Security in Albuquerque, New Mexico

2017 ◽  
Vol 03 (01) ◽  
pp. 1650019 ◽  
Author(s):  
Dadhi Adhikari ◽  
Jennifer A. Thacher ◽  
Janie M. Chermak ◽  
Robert P. Berrens
Keyword(s):  
New Mexico ◽  
Water Supply ◽  
Forest Restoration ◽  
Public Support ◽  
Water Security ◽  
Water Source ◽  
Wildfire Risk ◽  
Preference Uncertainty ◽  
Show Evidence ◽  
Respondent Uncertainty

Reducing wildfire risk through forest restoration is vital for the sustainability of watersheds and the human systems that depend upon them. However, identifying public support and securing necessary funding to cover restoration costs is an important implementation challenge. Payment for ecosystem services models may help meet restoration objectives. While examples exist that show how funds can be generated from the public living near forestlands, an unresolved issue is whether households in a relatively distant municipal area would significantly support wildfire risk reduction efforts. This is an important issue as distant households often receive benefits from wildfire risk reductions, such as water source protection for municipal drinking water supply. The objective of this paper is to analyze survey-based contingent valuation data to investigate public support among urban Albuquerque, New Mexico (NM) households for restoration of a watershed that impacts the urban water supply security, but is spatially removed from the urban area. Econometric results show evidence of both significant public support for forest restoration-linking forests to faucets- and the importance of accounting for respondent uncertainty. The latter involves both: (i) uncertainty in the preferences for water security as an important collectively provided good (“preference uncertainty”); and (ii) uncertainty in the possibility that restoration activities across a forested landscape or watershed might actually deliver improved water security (“delivery uncertainty”). Econometric estimation results from a Double Hurdle model indicate a mean annual household willingness to pay (WTP) of US$[Formula: see text]64.44 (with a 95% of confidence interval of US$[Formula: see text]61.57–US$[Formula: see text]67.31), and corresponding median WTP of US$[Formula: see text]37.76 (US$[Formula: see text]36.16–US$[Formula: see text]39.37), for forest restoration that reduces wildfire risk and provides water source protection.

scholarly journals WATER SECURITY IN ECOLOGICAL POLITICS DURING COVID-19 PANDEMIC ERA

2020 ◽  
Vol 21 (3) ◽  
pp. 111-120
Author(s):  
Muhammad Yunus Zulkifli
Keyword(s):  
Water Supply ◽  
Flood Risk ◽  
Water Security ◽  
The Other ◽  
Ecological Problem ◽  
The Government ◽  
Ecological Politics ◽  
Ecological Leadership ◽  
Real Action ◽  
Over Time

The major challenges related to water security today are efforts to reduce flood risk; and efforts to increase water supply for communities, industry and agriculture. The ecohydrological approach is present as a solution to these two challenges. On the other hand, the ecological problem with the issue of water security in it has developed over time and awaits real action by the government. In a political framework, ecological issues have been considered marginal and lacking in priority instead of being dominated by other fields, such as economy, law, and infrastructure. In fact, the government is to be committed to promoting eco-friendly development. In the current COVID-19 pandemic, leadership that cares about the environment as a manifestation of ecological politics is a necessity, and is expected to be present both substantially and factually. With the spirit of ecological leadership, strengthening the environmental sector will be on par with other sectors.  Keywords: water security, eco-friendly development, ecological politics, ecological leadership.    

Fountains as Reservoirs of Myth and Memory

2017 ◽  
Author(s):  
Betsey A. Robinson
Keyword(s):  
Water Supply ◽  
Case Studies ◽  
Natural Water ◽  
Architectural Form ◽  
Before And After ◽  
Local Traditions ◽  
Local Nature

Case studies from Hellenistic and imperial Corinth and Ephesus demonstrate the ways in which springs and fountains were used to honour forces of nature, commemorate mythological figures and events, and strengthen, or even invent, local traditions. Famous for its natural water supply, Corinth capitalized on storied springs, both before and after its destruction and refoundation as a Roman colony. The fountains of Peirene and Glauce demonstrate different strategies for connecting past and present and establishing authority by the manipulation of architectural form and the selective retelling of stories. At Ephesus, Hellenistic and Roman fountains celebrated local nature and myth with increasingly extravagant architecture, statuary, and water displays. This chapter focuses on a series of fountains that featured the founding hero Androclus, from a monument erected in his honour to great facade fountains in which he was one of many figures communicating Ephesian identity and pride.

scholarly journals Ultramicro Analysis of Odorous Materials by Massfragmentography in Raw Water Source of Water Supply

1978 ◽  
Vol 98 (1) ◽  
pp. 124-128
Author(s):  
YOSHITERU TSUCHIYA ◽  
TOSHIHIKO OKAMOTO
Keyword(s):  
Water Supply ◽  
Water Source ◽  
Raw Water

Analysis of Legal System and Public Policy on Rural Water Source in China

2012 ◽  
Vol 518-523 ◽  
pp. 4126-4129
Author(s):  
Zhen Hua Liu
Keyword(s):  
Public Policy ◽  
Drinking Water ◽  
Water Supply ◽  
Legal System ◽  
Rural Areas ◽  
Water Conservation ◽  
Water Source ◽  
Drinking Water Source ◽  
Rural Water ◽  
Laws And Regulations

Source of water is the beginning of rural drinking water projects, safe water source is the key to rural drinking water safety. Status of rural drinking water source in china and laws and regulations on rural water conservation were analyzed. The population of centralized water supply accounts for 51% of the total population in rural areas in 2008, centralized water supply 49%. Groundwater source accounts for 57% of the population of centralized water supply projects in rural areas in 2008, surface water sources 43%. China has a relatively sound legal system of drinking water source, including basic law, general law, administrative regulations, local regulations.The paper draws a conclusion that sources of drinking water in rural areas is mainly groundwater, water conservation is short of specific laws and regulations and not suitable for rural area,it is necessary to improve laws and regulations on rural water conservation, government must assume responsibility for rural water conservation, especially financial investment and public policy support.

Strategic water source areas for urban water security: Making the connection between protecting ecosystems and benefiting from their services

2017 ◽  
Vol 28 ◽  
pp. 251-259 ◽  
Author(s):  
Jeanne L. Nel ◽  
David C. Le Maitre ◽  
Dirk J. Roux ◽  
Christine Colvin ◽  
Janis S. Smith ◽  
...  
Keyword(s):  
Water Security ◽  
Water Source ◽  
Urban Water ◽  
Source Areas

Taking the road less taken: reorienting the state for periurban water security

2017 ◽  
Vol 18 (4) ◽  
pp. 528-545 ◽  
Author(s):  
Vishal Narain ◽  
Pranay Ranjan ◽  
Sumit Vij ◽  
Aman Dewan
Keyword(s):  
Action Research ◽  
Water Supply ◽  
Service Providers ◽  
Intervention Strategy ◽  
Water Security ◽  
Research Process ◽  
The State ◽  
The Road ◽  
Water Users ◽  
Building Community

This paper describes the intervention strategy to improve water security in Sultanpur, a village in periurban Gurgaon, India. Most approaches to improving natural resource management in periurban contexts focus on mobilising the community; little attention is paid to reorienting the state or strengthening the user-bureaucracy interface. This paper describes the action research process that was followed to reorient civic agencies engaged in the provisioning of water and to break from a situation of distrust and prisoners' dilemma between water users and service providers. The paper argues that the creation and provision of a platform for direct engagement between water users and service providers can be a key tool for improving periurban water security. These platforms can provide support in building community resilience to face challenges such as climate variability and urbanisation, both of which threaten periurban water security. The action research emphasises on building the community's capacity to ask for improved water supply and to negotiate with state service providers, rather than augmenting water supply physically.

scholarly journals FAKTOR DOMINAN DAN STRATEGI PENYEDIAAN AIR BERSIH DI DESA RAWAN AIR BERSIH PADA KECAMATAN BAITUSSALAM KABUPATEN ACEH BESAR

2018 ◽  
Vol 1 (4) ◽  
pp. 903-914
Author(s):  
Erwin Ferdinansyah ◽  
Azmeri Azmeri ◽  
Eldina Fatimah
Keyword(s):  
Water Supply ◽  
Ground Water ◽  
Water Discharge ◽  
Water Source ◽  
Dominant Factor ◽  
Clean Water ◽  
Water Infrastructure ◽  
Service Areas ◽  
Drinking Water Supply System ◽  
Water Problems

Abstract: Baitussalam sub-district is one of the areas vulnerable to water in the district of Aceh Besar. During this time the District community Baitussalam it difficult to obtain a continuous flow of clean water. This is due to the remote location of the water source so as to obtain clean water, people need a lot of time and effort. Villagers District of Baitussalam were not served with clean water Regional Water Company (PDAM) Tirta Mountala, using ground water as clean water. Problems arise when the dry season, the ground water level has decreased, even loss of water discharge at all. This study aims to identify the dominant factors that may affect the distribution of water supply and analyze the strategy of water supply clean water prone villages in the subdistrict of Aceh Besar district Baitussalam. This research was conducted with questionnaires and interviews. Observations were made on the District community Baitussalam unserved water from PDAM Tirta Mountala. The results showed that the dominant factor affecting the distribution of clean water in District Baitussalam is an area that will be served by PDAM Tirta Mountala, and the allocation of increased funding water infrastructure. Strategy clean water supply in villages prone to water in the District Baitussalam is a set of service areas by PDAM Tirta Mountala towards building water treatment, then allocate increased funding water infrastructure, improve the discharge source of clean water related water needs in each village, and do development of Drinking Water Supply system (SPAM). Abstrak: Kecamatan Baitussalam merupakan salah satu kawasan rawan air bersih yang ada di Kabupaten Aceh Besar. Selama ini masyarakat Kecamatan Baitussalam mengalami kesulitan untuk mendapatkan air bersih yang kontinu mengalir. Hal ini disebabkan karena lokasi yang jauh dari sumber air sehingga untuk mendapatkan air bersih, masyarakat membutuhkan banyak waktu dan tenaga. Masyarakat desa Kecamatan Baitussalam yang tidak terlayani air bersih Perusahaan Daerah Air Minum (PDAM) Tirta Mountala, menggunakan air tanah sebagai air bersih. Permasalahan timbul saat musim kemarau, muka air tanah mengalami penurunan, bahkan kehilangan debit air sama sekali. Penelitian ini bertujuan untuk mengindentifikasi faktor dominan yang dapat mempengaruhi distribusi penyediaan air bersih dan menganalisis strategi penyediaan air bersih di desa rawan air bersih pada Kecamatan Baitussalam Kabupaten Aceh Besar. Penelitian ini dilakukan dengan penyebaran kuesioner dan wawancara. Pengamatan dilakukan pada masyarakat Kecamatan Baitussalam yang belum mendapatkan pelayanan air dari PDAM Tirta Mountala. Hasil penelitian menunjukkan bahwa faktor dominan yang mempengaruhi distribusi air bersih di Kecamatan Baitussalam adalah luas wilayah yang akan dilayani oleh PDAM Tirta Mountala, dan alokasi dana peningkatan prasarana air bersih. Strategi penyediaan air bersih di desa rawan air bersih pada Kecamatan Baitussalam adalah menetapkan wilayah pelayanan oleh PDAM Tirta Mountala terhadap bangunan pengolahan air bersih, kemudian mengalokasikan dana peningkatan prasarana air bersih, meningkatkan debit sumber air besih terkait kebutuhan air pada masing-masing desa, dan melakukan pengembangan Sistim Penyediaan Air Minum (SPAM).

scholarly journals Assessing efficiency of pre-ammonization aimed at reducing carcinogenic risks caused by trihalomethanes in drinking water

2020 ◽  
pp. 70-77
Author(s):  
L.A. Deryabkina ◽  
◽  
B.I. Marchenko ◽  
N.K. Plugotarenko ◽  
A.I. Yukhno ◽  
...  
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Natural Water ◽  
Water Source ◽  
Water Disinfection ◽  
Residual Chlorine ◽  
Gas Liquid Chromatography ◽  
Initial Water ◽  
Organic Chlorine ◽  
Deep Purification

In most Russian regions there is still a pressing issue related to providing population with high quality and safe drinking water. Up to now, chlorination has been the primary technique applied to disinfect drinking water as it is highly efficient, reliable, and relatively cheap. However, when chlorine is used to disinfect natural water that contains organic pollutants, it results in risks of by-products occurrence. These products are trihalomethanes, epigenetic carcinogenesis promoters that cause elevated carcinogenic risks under oral, inhalation, and subcutaneous exposure. Our research goal was to hygienically assess efficiency of pre-ammonization applied in water treatment procedures in order to prevent occurrence of carcinogenic organic chlorine compounds during chlorination and to minimize carcinogenic risks. We determined trihalomethanes and residual chlorine contents in model samples of natural water taken from a surface water source after chlorination with different doses of chlorine. We examined 52 pair parallel samples that had undergone pre-ammonization with ammonia sulfate and control ones. Trihalomethanes concentrations were determined in model water samples with gas-liquid chromatography. Basing on the results obtained via experiments on laboratory chlorination of river water, we determined quantitative characteristics and built regression models showing dependence between concentrations of organic chlorine compounds occurring due to chlorination (chloroform, dichlorobrommethane, dibromchloromethane) and chlorine doses and preammonization parameters. It was established that pre-ammonization was the most efficient in terms of preventing trihalomethanes occurrence under such disinfection modes when contents of residual active chlorine didn’t exceed recommended levels (0.8–1.2 mg/L). Basic ways to minimize carcinogenic risks caused by trihalomethanes are systemic control over their contents in drinking water during social and hygienic monitoring procedures; preliminary ammonization of water taken from surface water sources; prevention of unjustified hyper-chlorination; preliminary deep purification of initial water; disinfection with ultrasound radiation instead of preliminary chlorination; etc.

scholarly journals Waterborne outbreaks in the Nordic countries, 1998 to 2012

2015 ◽  
Vol 20 (24) ◽  
Author(s):  
B Guzman-Herrador ◽  
A Carlander ◽  
S Ethelberg ◽  
B Freiesleben de Blasio ◽  
M Kuusi ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Supply ◽  
Distribution Systems ◽  
Water Source ◽  
Nordic Countries ◽  
Surveillance Systems ◽  
Water Supplies ◽  
Treatment Regimens ◽  
Supply And Distribution ◽  
Household Water

A total of 175 waterborne outbreaks affecting 85,995 individuals were notified to the national outbreak surveillance systems in Denmark, Finland and Norway from 1998 to 2012, and in Sweden from 1998 to 2011. Between 4 and 18 outbreaks were reported each year during this period. Outbreaks occurred throughout the countries in all seasons, but were most common (n = 75/169, 44%) between June and August. Viruses belonging to the Caliciviridae family and Campylobacter were the pathogens most frequently involved, comprising n = 51 (41%) and n = 36 (29%) of all 123 outbreaks with known aetiology respectively. Although only a few outbreaks were caused by parasites (Giardia and/or Cryptosporidium), they accounted for the largest outbreaks reported during the study period, affecting up to 53,000 persons. Most outbreaks, 124 (76%) of those with a known water source (n = 163) were linked to groundwater. A large proportion of the outbreaks (n = 130/170, 76%) affected a small number of people (less than 100 per outbreak) and were linked to single-household water supplies. However, in 11 (6%) of the outbreaks, more than 1,000 people became ill. Although outbreaks of this size are rare, they highlight the need for increased awareness, particularly of parasites, correct water treatment regimens, and vigilant management and maintenance of the water supply and distribution systems.

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