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UBC Theses and Dissertations
The effectiveness of pH and alkalinity adjustments in reducing lead and copper levels in rechlorinated and chloraminated tap water Chan, Kenneth C. H.
Abstract
The effectiveness of pH and alkalinity adjustments in reducing copper and lead levels in rechiorinated and chioraminated tap water was assessed for a study area in Greater Vancouver. Standing cold water, running hot and cold samples were collected from 105 houses that were located in the study areas. The samples were analyzed in the laboratory for lead and copper concentrations, pH, and alkalinity. After following an complex scheme of data manipulation, sorting, and statistical testing, comparisons of the copper and lead levels between the study areas were made. This research study found that pH and alkalinity adjustments were definitely effective in reducing the copper levels in rechlorinated and chioraminated tap water. Lead levels were also reduced, but the magnitude of the reduction was statistically insignificant. The effects of pH and alkalinity adjustments on copper and lead levels did not appear to be different for rechlorinated and chloraminated tap water. Compared to houses with copper plumbing, houses with plastic plumbing and no-lead solder had extremely low levels of copper or lead in the tap water. This study also found that the age of a house, which was fitted with copper plumbing and was less than 15 years old, was not a significant factor in affecting lead concentrations.
Item Metadata
Title |
The effectiveness of pH and alkalinity adjustments in reducing lead and copper levels in rechlorinated and chloraminated tap water
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1994
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Description |
The effectiveness of pH and alkalinity adjustments in reducing copper and lead
levels in rechiorinated and chioraminated tap water was assessed for a study area in
Greater Vancouver. Standing cold water, running hot and cold samples were collected
from 105 houses that were located in the study areas. The samples were analyzed in
the laboratory for lead and copper concentrations, pH, and alkalinity.
After following an complex scheme of data manipulation, sorting, and statistical
testing, comparisons of the copper and lead levels between the study areas were made.
This research study found that pH and alkalinity adjustments were definitely
effective in reducing the copper levels in rechlorinated and chioraminated tap water.
Lead levels were also reduced, but the magnitude of the reduction was statistically
insignificant. The effects of pH and alkalinity adjustments on copper and lead levels
did not appear to be different for rechlorinated and chloraminated tap water.
Compared to houses with copper plumbing, houses with plastic plumbing and no-lead
solder had extremely low levels of copper or lead in the tap water. This study also
found that the age of a house, which was fitted with copper plumbing and was less than
15 years old, was not a significant factor in affecting lead concentrations.
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Extent |
2380066 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-02-26
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0050406
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1994-11
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.