摘要:

This report reviews the existing knowledge of water pricing, identifies gaps in knowledge about the effects of water rates, and designates areas in which priority research is needed.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1983.tb05053.x

出版商:Wiley    

年代:1983

数据来源: WILEY

摘要:

This article analyzes the costs and benefits of a leak detection and repair program for a publicly owned water utility. The characteristics of different types of leaks and the accuracy of the detection method used are also discussed. The results of the analysis demonstrate that benefits outweigh costs and that the program has led to a substantial decrease in unaccounted‐for water without incurring greater repair costs for the system.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1983.tb05054.x

出版商:Wiley    

年代:1983

数据来源: WILEY

摘要:

Water samples collected during routine flushing of dead‐end mains were analyzed for bacterial count by using both pour plate and spread plate procedures. Results from these analyses were compared statistically. The pour plate procedure was neither as accurate nor as precise as the spread plate procedure for enumerating the heterotrophic plate count population.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1983.tb05055.x

出版商:Wiley    

年代:1983

数据来源: WILEY

摘要:

Key relationships between eutrophication of surface water supplies and the costs and quality of finished water are reviewed, with an emphasis on problems relating to organics. Data from lakes and reservoirs in the United States indicate a positive correlation between total phosphorus and total organic carbon measurements. In view of this correlation and results of controlled laboratory studies reported in the literature, nutrient enrichment is a significant factor contributing to organohalide problems in surface water supplies. Watershed management for control or reduction of phosphorus export is suggested as a potentially significant and cost‐effective means of dealing with organics‐related problems. Regionally calibrated empirical models can be used in conjunction with appropriate reservoir and watershed monitoring data to assess the extent, significance, and controllability of water quality problems related to phosphorus export and eutrophication.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1983.tb05056.x

出版商:Wiley    

年代:1983

数据来源: WILEY

摘要:

Performances of two devices for point‐of‐use treatment are reported. One device was a combination of a granular activated carbon bed and a precoat filter; the other was a combination of a reverse osmosis unit, a prefilter, and two granular carbon adsorption units. These devices were studied in order to determine the extent to which they were able to remove various organic, inorganic, microbiologic, and particulate contaminants from potable water.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1983.tb05057.x

出版商:Wiley    

年代:1983

数据来源: WILEY

摘要:

More than 300 utilities answered questions about their disinfection, water quality control, and safety practices. The purpose of the questionnaire was to document the prevailing water treatment practices, especially those for disinfection, before many treatment modifications had been made to control trihalomethane levels in drinking water. An analysis of the answers is provided in this report.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1983.tb05058.x

出版商:Wiley    

年代:1983

数据来源: WILEY