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DECENTRALIZED WASTEWATER MANAGEMENT NEEDS ASSESSMENT: A SMALL COMMUNITY’S APPROACH, WARREN, VERMONT
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org
Citation: Pp. 427-434 in On-Site Wastewater Treatment, Proc. Ninth Natl. Symp. on Individual and Small Community Sewage Systems (11-14 March 2001, Fort Worth, Texas, USA), ed. K. Mancl., St. Joseph, Mich. ASAE 701P0009.
Authors: M. K. Clark, W. S. Heigis, B. F. Douglas, J. B. Hoover
Keywords: Data analysis, Data management, Demonstration, EPA, GIS Geographic Information System, GPS Global Positioning System, IA, Management tool, On-site sewage disposal, On-site wastewater treatment, Orthophotograph, Sewage treatment, Sewage system, Spatial analysis
Warren, a traditional New England village in northern Vermont, began receiving reports of failing
sewage systems in the early 1980’s. Water quality monitoring showed elevated levels of E. coli in
the Mad River. As a result, Warren started a process to develop a centralized collection, treatment,
and dispersal system for domestic wastewater. The project stalled due to high construction costs,
resistance to mandatory connection requirements, and the fact that the dispersal field could not
accommodate flows from the entire village. In 1998, Warren was awarded an Environmental
Protection Agency (EPA) National Community Decentralized Wastewater Management
Demonstration grant to evaluate, develop, and implement alternative community wastewater
solutions.
The solution development includes an extensive public education program; a wastewater needs
survey, and homeowner workshops. A Wastewater Advisory Committee of local residents is
guiding the planning process. The Committee has helped oversee a lot-by-lot needs assessment,
and evaluate site conditions and wastewater treatment needs. Local and state regulations are used
as the basis for rating individual sewage systems and determining whether a site has suitable area
for future replacement. A comprehensive Geographic Information System (GIS) was created to
integrate available electronic data with field assessments.
The decentralized wastewater needs assessment focuses on maintaining existing suitable systems,
identifying replacement system solutions as close to the wastewater generating property as
possible, and establishing a community wastewater management program. The range of solutions
available includes improved maintenance or upgrades to existing suitable systems, replacing
marginal systems with traditional on-site or innovative and alternative treatment and dispersal
systems, and identifying potential cluster sites for those lots requiring off-site solutions. This
approach develops customized solutions for each lot, based on a fact-based assessment of needs
and alternatives. Implementing a management program, including remote monitoring, is the next
step to keep all wastewater treatment and dispersal systems functioning well on a long-term basis.
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