Greater Vancouver Water District drinking water corrosion inhibitor testing

1997 ◽  
Vol 24 (1) ◽  
pp. 34-52 ◽  
Author(s):  
D M MacQuarrie ◽  
D S Mavinic ◽  
D G Neden
Keyword(s):  
Drinking Water ◽  
Corrosion Inhibitor ◽  
Water District

Overview of Technology for Controlling Off-Flavors in Drinking Water

1988 ◽  
Vol 20 (8-9) ◽  
pp. 215-228 ◽  
Author(s):  
Michael J. McGuire ◽  
John M. Gaston
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Analytical Method ◽  
Southern California ◽  
Research Groups ◽  
Flavor Compound ◽  
Treatment Methods ◽  
New Information ◽  
Off Flavors ◽  
Water District

Several reviews of treatment methodologies for control of off-flavors in drinking water have recently been published. This paper builds on these reviews, adding new information developed by the Metropolitan Water District of Southern California and other research groups. The most important tool in any program to control off-flavors is a reliable, reproducible, easy-to-use analytical method. It is difficult to control off-flavor problems unless the off-flavor compound is identified or a sensory technique is used. From a cost perspective, most off-flavors can be best controlled at the source. Treatment methods, particularly those utilizing chemicals and activated carbon, are effective but expensive, and they can lead to secondary problems that are more objectionable than the off-flavor.

Using monochloramines to disinfect drinking water: the effects it has on lead content

2010 ◽  
Vol 5 (2) ◽  
Author(s):  
A.M. Rizzuti ◽  
L.N. Rogers
Keyword(s):  
Drinking Water ◽  
Water Samples ◽  
Distribution System ◽  
Water Distribution ◽  
Graphite Furnace ◽  
Atomic Absorption Spectrophotometry ◽  
The Past ◽  
Graphite Furnace Atomic Absorption ◽  
Water District ◽  
Pb Concentration

Over the past ten years, several U.S. cities have switched from using free chlorine to chloramines to disinfect drinking water. Coincident with this shift have been reports by some water districts of lead (Pb) levels in drinking water that exceed the action limit of 15ppb set by the EPA. In this paper, a study was conducted on a water district that utilizes monochloramines to disinfect drinking water. The purpose of this research was to determine the Pb content of drinking water treated in this district. Water samples were collected both from homes with and from homes without Pb plumbing. The water samples were analyzed for Pb content using graphite furnace atomic absorption spectrophotometry. Samples obtained from homes without Pb plumbing had a Pb concentration range of 10.7 ppb − 20.3 ppb (average = 15.9 ppb), whereas samples obtained from homes with Pb plumbing had a Pb concentration range of 20.4 ppb − 73.9 ppb (average = 29.0 ppb). The average Pb concentrations for both types of homes were above the EPA action limit of 15ppb. The most plausible explanation for this is leaching of Pb from the water distribution system caused by the water treatment plants' use of monochloramines to disinfect water.

scholarly journals A study on physico-chemical parameters of Dah lake water, District-Ballia (U.P.), India

2012 ◽  
Vol 4 (2) ◽  
pp. 237-240 ◽  
Author(s):  
Rajnish Kumar Sharma ◽  
Devendra Kumar Soni ◽  
Nirupma Agrawal
Keyword(s):  
Drinking Water ◽  
Economic Condition ◽  
Total Alkalinity ◽  
Total Hardness ◽  
Inorganic Pollutants ◽  
Chemical Parameters ◽  
Physico Chemical ◽  
Water District ◽  
Sensitive Parameters

The back water of river Saryu is a prime source of water for Dah Lake, located in Ballia district, have been studied to project the pristinety of water with respect to different pollution sensitive parameters i.e. organic pollutants– BOD, DO, COD, Inorganic pollutants - Electrical Conductivity, Turbidity, pH, total alkalinity, Chloride, Total hardness etc. The pH (7.68), total alkalinity (180.5 mg/l), Chloride (133.12 mg/l), Total hardness(139.83 mg/l), Calcium (60.26 mg/l) and Magnesium hardness (19.38 mg/l) were found well within the prescribed standard for drinking water (BIS 10500:1991) during the study period i.e. April 2006- March 2008. The study inferred that the water quality of Dah Lake is still free from the any kind of pollutants, must be due to its higher assimilative capacity. It also indicates the higher potential for pisiculture and drinking water sources (after disinfection) for the nearby villages which may ultimately improve the economic condition of the surrounding habitation.

scholarly journals Corrosion Control in Water Pipes by Adjusting the Corrosivity of Drinking Water : Effect and impact of the Corrosion Inhibitor

2016 ◽  
Vol 15 (6) ◽  
pp. 303-310
Author(s):  
Young-Bog Park ◽  
Ju-Hyun Park ◽  
Eun-Hee Park ◽  
Jin-Suk Lee ◽  
Hyen-Ton Kim ◽  
...  
Keyword(s):  
Drinking Water ◽  
Corrosion Inhibitor ◽  
Corrosion Control ◽  
Water Effect ◽  
Water Pipes

Habitat Association of Klebsiella Species

1985 ◽  
Vol 6 (2) ◽  
pp. 52-58 ◽  
Author(s):  
Susan T. Bagley
Keyword(s):  
Drinking Water ◽  
Gastrointestinal Tract ◽  
Surface Waters ◽  
Industrial Effluents ◽  
Opportunistic Pathogen ◽  
Habitat Associations ◽  
Habitat Association ◽  
Klebsiella Species ◽  
Almost All ◽  
Polluted Waters

AbstractThe genus Klebsiella is seemingly ubiquitous in terms of its habitat associations. Klebsiella is a common opportunistic pathogen for humans and other animals, as well as being resident or transient flora (particularly in the gastrointestinal tract). Other habitats include sewage, drinking water, soils, surface waters, industrial effluents, and vegetation. Until recently, almost all these Klebsiella have been identified as one species, ie, K. pneumoniae. However, phenotypic and genotypic studies have shown that “K. pneumoniae” actually consists of at least four species, all with distinct characteristics and habitats. General habitat associations of Klebsiella species are as follows: K. pneumoniae—humans, animals, sewage, and polluted waters and soils; K. oxytoca—frequent association with most habitats; K. terrigena— unpolluted surface waters and soils, drinking water, and vegetation; K. planticola—sewage, polluted surface waters, soils, and vegetation; and K. ozaenae/K. rhinoscleromatis—infrequently detected (primarily with humans).

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