摘要:

Engineers must develop their communications skills and also must increase their accountability for the decisions they make that will affect government policy. Because of the growing public demand for information on costs and alternatives, and the increasing restraint mentality now prevalent in many levels of government, communication and accountability are becoming important areas of responsibility.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04504.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

This discussion examines how well the Safe Drinking Water Act (SDWA) has met its intended goals. The drinking water program is almost two separate programs: one aspect of which is to bring the public water systems into compliance with regulations regarding the traditional contaminants of concern. That is a task of a different character than dealing with the new contaminants of concern, which led in great measure to the SDWA's being passed. Universal monitoring, training and source protection, information dissemination, establishment of MCLs, development of demonstration plants, spills, synthetic organic compounds, and giardiasis are problems covered.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04505.x

出版商:Wiley    

年代:1980

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04506.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

On July 19, 1979, the Environmental Protection Agency proposed amendments to the National Interim Primary Drinking Water Regulations which included requirements that community water systems that distribute corrosivity of drinking water because of the potential health implications associated with corrosion byproducts, the degradation of the aesthetic quality of drinking water, and the significantly economic consequences of deteriorated materials in distribution systems. The May 1980 issue of JOURNAL AWWA reports the results of current research on internal corrosion, the costs involved, and the operational benefits of implementing a corrosion control program.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04507.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

During a recent drought in Fairfax County, Va., two practical risk analysis techniques were developed to determine the possibility of extreme water shortages and to evaluate the policies necessary for reducing those risks to acceptable levels.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04508.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

Because of more stringent water quality requirements, many water utilities must reevaluate the operation of plant facilities to determine that optimum water quality is being provided in the most efficient and cost effective manner. Modifying unit processes of surface water filtration plants such as rapid mixing, flocculation, sedimentation, filtration, and process control can improve finished water quality, reduce operating costs, and often increase plant capacity at a fraction of the cost for new plant construction.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04509.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

That corrosion caused by aggressive water not only carries the threat of distribution system deterioration but also poses a potential health hazard is generally recognized. But just how widespread is the problem? And how serious? A national survey covering water suppliers serving approximately one fifth of the US population shows almost 70 percent of the representative utilities to have moderately to highly aggressive waters.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04510.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

A study conducted for the Seattle Water Department found that costs of corrosion of consumer plumbing and piping were ten times higher for initial capital and twenty times higher for annual maintenance than distribution system corrosion costs.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04511.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

For more than thirty years the Philadelphia Suburban Water Co. has conducted an ongoing study program to determine the extent of corrosion in its distribution system and to evaluate various treatment methods that could reduce it.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04512.x

出版商:Wiley    

年代:1980

数据来源: WILEY

摘要:

At reasonable cost, the Middlesex Water Company's corrosion monitoring and control program has improved water quality, saved chemical treatment costs, and protected both the distribution system and the consumers’ piping.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1980.tb04513.x

出版商:Wiley    

年代:1980

数据来源: WILEY