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  Onsite Wastewater Treatment Systems Manual (367 pp, 13.4 MB) (EPA/625/R-00/008) February 2002
June 2003

This update of the 1980 manual was developed to provide supplemental and new information for wastewater treatment professionals in both the public and private sectors. This manual is not intended to replace the previous one, but rather to further explore and discuss recent developments in treatment technologies, system design, and long-term system management. The information is provided in response to several calls for a more focused approach to on-site wastewater treatment and on-site system management.

Congress has expressed interest in the status of site level approaches for treating wastewater, and the Executive Branch has issued directives for moving forward with improving both the application of treatment technologies and management of the systems installed.

The 1980 manual provides technical information on generic types of on-site wastewater treatment and disposal systems, and can be used as a reference document in conjunction with the current manual.


Lynnann Hitchens

See Also

Design Manual, On-Site Wastewater Treatment and Disposal Systems (EPA/625/1-80/012) October 1980

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