Burden of Public Investment Costs for Forest Conservancy in Preservation of Water Supply Sources

Keiko NAKAYAMA; Masatoshi SHIRAI

doi:10.2457/srs.39.553

Economic sustainability of water supply public policy in Brazil semiarid regions

Research Society and Development ◽

10.33448/rsd-v9i6.3435 ◽

2020 ◽

Vol 9 (6) ◽

pp. e65963435

Author(s):

Davi Madureira Victral ◽

Luiza Barros Grossi ◽

Alisson Martins Ramos ◽

Hebert Medeiros Gontijo

Keyword(s):

Public Policy ◽

Water Supply ◽

Public Investment ◽

Private Investment ◽

Community Empowerment ◽

Mitigation Measures ◽

Semiarid Region ◽

Economic Sustainability ◽

Economic Activities ◽

Semiarid Regions

Droughts affect semiarid regions worldwide, threatening economic activities and lives of people living in these places. In Brazil, 11% of the population inhabits the semiarid, and despite several mitigation measures taken by the State, it is still ranked as the most vulnerable Brazilian region and potentially the most affected by climate change. Throughout Brazilian history several public policies focused on water supply in the semiarid region have failed for different reasons. Two recurring arguments are the lack of financial resources and poor management. This work presents an analysis of a public policy that aims to provide quality and perennial water by desalting local brackish groundwater, the Programa Água Doce (PAD). We used the ecodevelopment theory to discuss the economic sustainability of the policy. The methodology used was a documental analysis, and a literature review to understand PAD’s main strengths and weaknesses. We found that the continuous flow of public and private investment was a decisive element to the implementation of the technology during the initial transference of responsibilities moment. In addition, by the gradual reduction of public investment, the management of the systems became local and funded by private resources from the beneficiaries. The PAD presents, in its dynamics, advances in the field of the dissemination of water treatment technologies and social technologies, especially in relation to the Management Agreements. However, the lack of processes for community empowerment and no strengthening of cooperativism resulted in disconnected systems that were not able to ensure economic sustainability.

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Enumeration and Identification of Asbestos Fibres in Water

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010005264x ◽

1974 ◽

Vol 32 ◽

pp. 526-527 ◽

Cited By ~ 1

Author(s):

O. Mudroch ◽

J. R. Kramer

Keyword(s):

Water Supply ◽

Water Samples ◽

Drainage Basin ◽

Lake Superior ◽

Research Work ◽

List Type ◽

The West ◽

Asbestos Fibre ◽

Amphibole Asbestos

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.

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Bacterial biofilm behavior in water-supply lines of dental units

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100124811 ◽

1992 ◽

Vol 50 (1) ◽

pp. 882-883

Author(s):

B.D. Tall ◽

K.S. George ◽

R. T. Gray ◽

H.N. Williams

Keyword(s):

Water Supply ◽

Medical Devices ◽

Biofilm Formation ◽

Bacterial Biofilm

Studies of bacterial behavior in many environments have shown that most organisms attach to surfaces, forming communities of microcolonies called biofilms. In contaminated medical devices, biofilms may serve both as reservoirs and as inocula for the initiation of infections. Recently, there has been much concern about the potential of dental units to transmit infections. Because the mechanisms of biofilm formation are ill-defined, we investigated the behavior and formation of a biofilm associated with tubing leading to the water syringe of a dental unit over a period of 1 month.

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