Off-campus South Dakota State University users: To download campus access theses, please use the following link to log into our proxy server with your South Dakota State University ID and password.

Non-South Dakota State University users: Please talk to your librarian about requesting this thesis through interlibrary loan.


Jan E. Hardie

Document Type

Thesis - University Access Only

Award Date


Degree Name

Master of Science (MS)


Civil Engineering

First Advisor

Dwayne A. Rollag


Corrosion is important to the waterworks industry for three reasons. These reasons are economics, health, and aesthetics. Corrosion may result in extensive and costly replacement of the distribution system. In 1979, the National Bureau of Standards reported that annual corrosion costs related to water distribution systems in the water supply field totaled about $700 million. About 20 percent of water supply corrosion costs were thought to be avoidable by control measures. Corrosion of materials in home plumbing and distribution pipelines increases the concentrations of metal ions in the water. Lead, cadmium, and other heavy metals that are present in piping materials in various amounts may be leached into the water, where they could cause possible health hazards when the water is used by the consumer. Secondary contaminants such as iron, copper and zinc, may also be leached into the water as a result of corrosion. When present in excessive concentrations, these contaminants may cause the water to be aesthetically unacceptable due to color, taste, or staining problems. The research objectives of this thesis were to study the effects of ozone on corrosion by: 1) determining the effect of ozonation on the corrosion rate as measured by a corrosion-sensing instrument; 2) determining the relationship between ozonation and dissolved oxygen concentrations in the water; 3) determining the effect of ozonation on water stability as measured by the use of Caldwell-Lawrence diagrams and the Langlier Saturation Index.

Library of Congress Subject Headings


Water-pipes -- Corrosion

Corrosion and anti-corrosives



Number of Pages



South Dakota State University