Aerobic units treat wastewater using the same process, only scaled down, as municipal wastewater treatment systems. This publication explains how aerobic units work, what their design requirements are, and how to maintain them. (4 pp., 2 figures, 1 table)
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This 12-page publication explains why artificial drainage is needed on some soils, the types of drainage systems, drainage design considerations, and the steps and economics in installing a relief drainage system.
This 2-page publication explains the steps that people living near streams or lakes should take to minimize their environmental impact and improve water quality.