260969 Physical and chemical markers of surface water pollution in park lakes, rivers and streams in the Los Angeles Metropolitan region, California

Monday, October 29, 2012

Javier Lopez-Zetina, PhD, MA , Department of Health Science, California State University, Long Beach, Long Beach, CA
Parisa Shams, MPH , Health Science, California State University, Long Beach, Long Beach, CA
Background: To describe chemical and physical characteristics of non-drinking surface water in samples taken from city park lakes, rivers and streams in the Los Angeles Metropolitan region. Randomly selected water samples were tested for water quality parameters.

Methods: The study design is a cross-sectional assessment of the water quality physical and chemical markers. Phase 1 of the study included identification of sites, collection, and testing of water samples using a rapid test kit and was limited to four indicator parameters. In Phase 2, water samples found outside the desirable range for these parameters were re-tested and confirmed with USEPA-accepted or approved water testing protocols. Phase 2 of the screening included a set of additional supplemental water quality markers. Results are parsed with GIS mapping information to further characterize potential health and ecological threats due to water contamination.

Results: This presentation discusses the presence and concentration of water pollutants in non-drinking water samples taken in public spaces in Los Angeles County. This presentation provides a framework for understanding the need for ongoing water quality monitoring, and for identifying non-point water pollution sources and potential remediation practices.

Conclusions: Stormwater pollution and other sources of non-point water contamination frequently find its way to city lakes, rivers, beaches, etc. in urban communities. Municipal stormwater drainage and sewage infrastructure is severely outdated or insufficient in many urban localities. Routine water quality monitoring may provide public awareness and evidence for local governments and citizens to develop innovative ideas for water pollution prevention and control strategies.

Learning Areas:
Environmental health sciences
Public health or related public policy

Learning Objectives:
Discuss chemical and physical markers of non-drinking water associated with greater pollution of surface water in Southern California. Discuss water sampling issues associated with environmental degradation in urban communities. List potential public health harmful exposures as a result of the increasing degradation of surface water quality in urban communities.

Keywords: Water Quality, Water Test

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: I have been the principal investigator of extramural funded grants at my educational institution.
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.