This study was a review of the collective distribution of a whole data set known as the Lead and Copper Rule (LCR) data set, which is used to assess the potential consequences from water treatment changes in the San Francisco Bay area’s water supply (SFWS). The data set shows water samples and tests run on these samples for pH, lead and copper as well as other various metals’ concentrations in the water. The data is from the year 2000 to the year 2006, and the study found that most of the pH levels were significantly and consistently higher in 2006 than in any year before and this was due to improved corrosion control treatment of metals in the water in 2005.

The topic for this study was water conditioning to control metals, lead, copper and corrosion release in the San Francisco area’s water supply. And the study asked the question; what consequences do water treatment changes have on the water supply of San Fran and in the concentrations of metals in that water supply?

The type of data collected for this research was aggregate interval or ratio data taken every year in the San Francisco Bay area’s water supply. These water samples taken were tested for pH levels and metals and then compared between the years 2000 to 2006. This research study was thorough and easy to comprehend without having a high level of knowledge on the subject.

Wilczak, A., Hokanson, D. R., Trussell, R. R., Boozarpour, M., & DeGraca, A. F. (2010). Water Conditioning for LCR Compliance and Control of Metals Release in San Francisco’s Water System. American Water Works Association.Journal, 102(3), 52-64,14.

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