Water Pollution + Onsite Wastewater Systems

Sunday, June 6
Lecture HallLecture Hall
1:00 - 1:50pm
Graywater Applications -
Educational session sponsored by NSF International
It used to be that only in arid regions were people searching for ways to conserve and reuse water. With the “green” movement and tax incentives, water conservation and reuse are becoming more commonplace, and the reuse or “recycling” of graywater more popular. Because graywater is wastewater, reusing it raises concerns about disease transmission, either by contact with the water or the irrigated soils. This presentation will discuss various approaches to graywater reuse in the United States and worldwide, design considerations for gray water systems, and the current regulatory climate.
Joelle Wirth, RS, Program Manager, Coconino County Health Department, Flagstaff, AZ

2:00 – 2:50pm
Return Flow to Groundwater from Onsite Wastewater Systems

Many communities pump groundwater for potable supply, beneficially use the water only once, and discharge treated wastewater either directly into the ocean or into rivers that flow into the sea. This transfer of water from aquifers into the ocean is contributing to groundwater depletion and rising sea levels. Onsite wastewater systems can return significant amounts of water to the aquifer, and the potential benefits of doing so should be considered in regional water resources planning. This session will outline the method and benefits involved in such a process.
Dennis McQuillan, Liquid Waste Program Manager, New Mexico Environment Department, Santa Fe, NM

3:00 – 3:50pm
Pharmaceuticals and Organic Wastewater Compounds in Surface Water and Ground Water

Studies conducted throughout the United States by U.S. Geological Survey have found detectable concentrations of pharmaceutical compounds and organic wastewater contaminants (OWCs) in surface waters and groundwater, particularly at sites that are immediately downstream or downgradient of wastewater contaminant sources. Attend this session and explore how pharmaceuticals and other organic wastewater contaminants get into streams and groundwater systems. The session will also enable attendees to better understand the processes affecting the movement of pharmaceuticals and other organic wastewater contaminants in streams and aquifers used for drinking water.
Brian G. Katz, PhD, Research Hydrologist, US Geological Survey, Tallahassee, FL



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