摘要:

In response to “Effects of Acid Rain on Water Supplies in the Northeast” (Journal AWWA March 1984) by Symons and Taylor, Mr. Schock comments that the calcite saturation index (CSI) is so similar to the Langelier Index that nothing new is being taken into account. Its ability to predict the sensitivity of water to acid loading is questionable on the basis of fundamental aqueous chemistry. None of the indexes used in the article can estimate the amount of calcium carbonate that could be dissolved or deposited. Therefore, there is little advantage in promoting the use of over‐simplified indexes that cannot represent real systems. The authors in turn agree that CSI was not to be considered the answer to all of the problems, but rather the intent was to describe what might be a usable, empirical, or practical system for guidance with moderate costs and manageable logistics.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05322.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

Foster S. Burba, a 25‐year veteran of the water industry, is president of the Louisville (Ky.) Water Company.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05323.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

A Public Utilities Commission (PUC) policy of permanently disconnecting water service for nonpayment of bills was struck down as unconstitutional by the Supreme Court of New Hampshire.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05326.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

Joe R. Harris of Camp, Dresser,&McKee, Inc., served as resource economist of a four‐year study of the Ogallala Aquifer. Under the direction of the US Department of Commerce, the study was performed by Camp, Dresser,&McKee as prime contractor, in association with Arthur D. Little, Inc., and Black&Veatch. AWIVA Executive Director David B. Preston discussed the findings of the study with Harris on March 24, 1984, in Denver, Colo.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05328.x

出版商:Wiley    

年代:1984

数据来源: WILEY

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05329.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

The ideal goal of complete protection of underground drinking water sources is probably economically and physically infeasible. Relatively few of the nation's drinking water wells have been contaminated, and the most serious instances of contamination can be controlled with proven techniques such as impounding plumes of contamination behind barrier walls or draining and pumping the plume. In the long term, the public should be made aware of the consequences of using certain common household, industrial, and agricultural products that can ultimately seep into drinking water aquifers.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05330.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

Various legal grounds for filing suit to recover the costs of cleanup of contaminated underground water supply sources are summarized. The author also outlines prudent measures that a plaintiff utility should take in preparing and presenting evidence and in raising revenues to meet the immediate costs of additional water treatment while pursuing relief from the party responsible for the contamination.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05331.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

The Rockaway Township (N.J.) water utility installed a granular activated carbon (GAC) system to remove ethers and trichloroethylene that suddenly began contaminating its groundwater supplies. The system was installed expeditiously and performed well, but the carbon became exhausted within shorter and shorter periods of time. The solution was to add an aeration system prior to GAC treatment to extend the useful life of the carbon. As influent levels of the organic contaminants abated, the township was able to use aeration alone and to eliminate continuous use of the GAC system, maintaining it for contingencies only.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05332.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

Samples taken for analyzing the quality of groundwater can be altered by certain materials used in the construction of monitoring wells and even by the containers used to collect samples. Similar problems can occur with samples taken from a distribution system. Further research is needed to refine analytical procedures so that actual in situ data pertaining to organic compounds in groundwater can be obtained.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05333.x

出版商:Wiley    

年代:1984

数据来源: WILEY

摘要:

The results of the US Environmental Protection Agency, Office of Drinking Water, sampling and analysis of volatile organic compounds (VOCs) in finished water supplies that use groundwater sources are discussed. Concentrations of 29 VOCs in addition to five trihalomethanes and total organic carbon from 945 water supplies were measured. The five most frequently found compounds other than trihalomethanes were trichloroethylene, 1,1,1‐trichloroethane, tetrachloroethylene, cis‐ and/or trans‐1,2‐dichloroethylene, and 1,1‐dichloroethane. Approximately half of the samples were taken from a random list of water systems, which were subdivided into two sets of systems—those serving fewer than 10 000 persons and those serving more than 10 000 persons. The nonrandom samples were taken from systems selected by the states, using groundwater sources that were likely to show VOCs in drinking water. Large systems in the random sample had a significantly higher frequency of occurrence of VOC contamination than small systems and were also more likely to have higher levels of contamination.

ISSN:0003-150X    

DOI:10.1002/j.1551-8833.1984.tb05334.x

出版商:Wiley    

年代:1984

数据来源: WILEY