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Be a VoiceThis year the National Environmental Health Association (NEHA) has added a new way to participate in the Call for Abstracts process for the Annual Educational Conference (AEC) & Exhibition. It is called, "Be a voice" and it gives you the opportunity to tell us what you'd like to experience at the AEC. Tell us topics you'd like to hear about and speakers you'd like to see. Review abstracts and provide input. Help NEHA develop a training and education experience that continues to advance the proficiency of the environmental health profession AND helps create bottom line improvements for your organization!
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Friday, September 14, 2012

A Comparative In-Field Evaluation of Single Family Residential Wastewater Systems in Virginia


Wastewater treatment systems from four companies were evaluated using permanently occupied single-family residences located in the State of Virginia. Sampling of these systems began in the summer of 1995 and continued to the summer of 2011. Home locations ranged throughout Virginia. Concentrations of biochemical oxygen demand, total suspended solids, and either fecal coliform or Escherichia coli species were measured in system influent and effluent at least four times (once in each season) for each home. This valuable data was incorrectly statistically analyzed allowing pseudoreplication. This paper corrects that improper statistical approach and provides information on the performance of these treatment systems under real world conditions.
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