Specification for unplasticized PVC pipe (type 1420) for cold water supply

1962 ◽  
Keyword(s):  
Author(s):  
Yu.A. Novikova ◽  
I.O. Myasnikov ◽  
A.A. Kovshov ◽  
N.A. Tikhonova ◽  
N.S. Bashketova

Summary. Introduction: Drinking water is one of the most important environmental factors sustaining life and determining human health. The goal of the Russian Federal Clean Water Project is to improve drinking water quality through upgrading of water treatment and supply systems using advanced technologies, including those developed by the military-industrial complex. The most informative and reliable sources of information for assessing drinking water quality are the results of systematic laboratory testing obtained within the framework of socio-hygienic monitoring (SGM) and production control carried out by water supply organizations. The objective of our study was to formulate approaches to organizing quality monitoring programs for centralized cold water supply systems. Materials and methods: We reviewed programs and results of drinking water quality laboratory tests performed by Rospotrebnadzor bodies and institutions within the framework of SGM in 2017–2018. Results: We established that drinking water quality monitoring in the constituent entities of the Russian Federation differs significantly in the number of monitoring points (566 in the Krasnoyarsk Krai vs 10 in Sevastopol) and measured indicators, especially sanitary and chemical ones (53 inorganic and organic substances in the Kemerovo Region vs one indicator in the Amur Region). Discussion: For a more complete and objective assessment of drinking water quality in centralized cold water supply systems, monitoring points should be organized at all stages of water supply with account for the coverage of the maximum number of people supplied with water from a particular network. Thus, the number of points in the distribution network should depend, inter alia, on the size of population served. In urban settlements with up to 10,000 inhabitants, for example, at least 4 points should be organized while in the cities with more than 3,000,000 inhabitants at least 80 points are necessary. We developed minimum mandatory lists of indicators and approaches to selecting priority indices to be monitored at all stages of drinking water supply.


Water Policy ◽  
2012 ◽  
Vol 15 (3) ◽  
pp. 364-385 ◽  
Author(s):  
Lynn A. Mandarano ◽  
Robert J. Mason

This paper articulates the complexities of adaptively managing Delaware River water resources to meet shifting priorities of drinking water supply, drought mitigation and flood mitigation, as well as conflicting stakeholder interests. In particular, the paper examines the short-term and long-term programs that comprise the Delaware River Basin Commission's (DRBC) and the 1954 US Supreme Court Decree parties' successful adaptive management approach that seeks to balance the growing list of demands for water resources management, including drinking water supply, drought management, flood control and cold water fisheries protection. Review of the DRBC's adaptive governance approach reveals the critical complexities of designing experimental, yet science-driven management approaches and effectively engaging various sets of stakeholders in the associated decision-making processes.


1999 ◽  
Vol 4 (4) ◽  
pp. 565-581 ◽  
Author(s):  
BRUCE A. LARSON ◽  
EKATERINA D. GNEDENKO

Casual observation suggests that many households in Moscow boil water, settle water in pans for some periods (e.g., overnight) before consuming, filter water, and buy bottled water. To date, there has been little empirical analysis of such avoidance behavior. Based on a recently completed survey of 615 households in Moscow, this paper investigates the types and amounts of avoidance measures that are used by households in Moscow to adjust drinking water quality. Survey results show that this is clearly the case: over 88 per cent of the sample boil water regularly due to concerns about water quality; 23 per cent filter water regularly; over 30 per cent settle water regularly; and about 13 per cent buy bottled water regularly. On the other hand, residents are generally content with their cold water supply and quality of delivery. Based on a microeconomic model of household avoidance behavior, logit regression results show how avoidance decisions relate to income, opinions of water quality, and location in the city. It is expected that this analysis from Moscow can also be used as a guide for future studies in other cities in Russia to evaluate opinions of quality, avoidance measures, and citizens' willingness to support public infrastructure projects designed to improve water supply.


2019 ◽  
Vol 9 (4) ◽  
pp. 53-60
Author(s):  
Irina Yu. MIKHAILOVA

The article analyzes the relationship of the system of technical regulation in construction and regulatory relations for the provision of public services. Changes in the current system of legal regulation in the sphere of water supply of apartment buildings are considered. The article shows that the subject of rationing belongs to several areas of regulation, which requires improvement of the methodological basis for the design of in-house systems of hot and cold water supply of an apartment building and the creation of legitimate methodological tools. Recommendations on the formation of methodological procedures, the implementation of which will provide the legal legitimacy of the methods of hydraulic calculation. The method of determining the calculated (limit) costs of cold and hot water in centralized systems of drinking water supply of an apartment building.


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