USGS Scientific Investigations Report 2013–5001  - Sources and Characteristics of Organic Matter in the Clackamas River, Oregon, Related to the Formation of Disinfection By-Products in Treated Drinking Water 

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Scientific Investigations Report 2013–5001 

Prepared in cooperation with Clackamas River Water and the City of Lake Oswego 

Sources and Characteristics of Organic Matter in the Clackamas River, Oregon, Related to the Formation of Disinfection By-Products in Treated Drinking Water 

By Kurt D. Carpenter, Tamara E.C. Kraus, Jami H. Goldman, John Franco Saraceno, Bryan D. Downing, Brian A. Bergamaschi, Gordon McGhee, and Tracy Triplett

Contents

Conversion Factors, Datums, and Abbreviations 

Executive Summary 

Introduction 

Study Objectives and Approach 

Statistical Analyses 

Overview of River Conditions During 2010–11 

Dissolved and Particulate Carbon Concentrations 

Disinfection By-Product Concentrations in Finished Drinking Water 

Disinfection By-Product Formation Potentials 

Carbon Characterization Using Optical Properties 

Proxies for Carbon and Disinfection By-Product Precursor Concentrations 

Water Treatment and Removal Efficiencies for Dissolved Organic Carbon and Disinfection By-Product Precursors 

Custom In-Situ Fluorescence Sensors 

Sources of Organic Carbon that Contribute Disinfection By-Product Precursors 

Strategies for Managing and Reducing Disinfection By-Products 

Fluorescence Technology for Drinking‑Water Management 

Conclusions, Implications for Drinking-Water Treatment and River Management, and Possible Future Studies 

Acknowledgments 

References Cited 

Appendixes and Data Quality Assurance 

First posted February 11, 2013

Report PDF (5.3 MB)

Appendixes XLSX (490 KB)

For additional information contact:
Director, Oregon Water Science Center
U.S. Geological Survey
2130 SW 5th Avenue
Portland, Oregon 97201
http://or.water.usgs.gov

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