Ecological Dry Toilets and Other Water Conservation Alternatives
   About small-scale solutions for water conservation: dry toilets, rainwater harvesting, constructed wetlands for greywater treatment, and organic gardening.
   http://www.laneta.apc.org/esac/drytoilet.htm

Frequently Asked Question about Onsite Wastewater Treatment and Disposal Systems
   About septic systems and other small-scale onsite wastewater management.
   http://www.ci.austin.tx.us/wri/faq.htm

Grey Water Central
   Provides definitions, technical information, and regulations, as well as discussing possible applications and system design.
   http://oasisdesign.net/greywater/

Greywater
   Technical information on characteristics and system designs.
   http://www.greywater.com/

How Stuff Works: Sewer and Septic Systems
   Illustrated multiple-part explanation of how sewer systems and septic tank systems really work, with related links.
   http://www.howstuffworks.com/sewer.htm

Kentucky Onsite Wastewater Training Center
   Training for designers, manufactures, installers, regulators, and homeowners, in the installation, operation, and maintenance of onsite wastewater treatment systems.
   http://www.kentuckyonsite.org/

Managing Household Wastewater
   Mississippi State University fact sheet on septic tanks and soil absorption systems for household sewage and wastewater.
   http://msucares.com/pubs/publications/p1869.htm

NOWRA
   The National Onsite Wastewater Recycling Association, Inc. (NOWRA) was founded in 1991 as a national professional organization to advance and promote the onsite wastewater industry.
   http://www.nowra.org/

National Small Flows Clearinghouse
   Provides information about alternative waste water systems for home owners or communities serving fewer than 10,000 people who treat wastewater via septic systems. Includes publications, services and databases of related information.
   http://www.nsfc.wvu.edu/

On-Site Wastewater Research Program
   Site has information on septic system technology and other onsite sewage treatment options. (Nova Scotia provincial research program.)
   http://centreforwaterresourcesstudies.dal.ca/cwrs/onsite/cwrstab.htm

Recycling of Greywater
   How to process greywater from shower for toilet flushing in a simple and sustainible way.
   http://www.reinerhildebrand.de/grau/grey.html

Septic Protector
   How septic systems function, what causes them to fail, information and products to help prevent them from failing.
   http://www.septicprotector.com/

Septic Systems (Pennsylvania Perspective)
   On-line guide to on-lot wastewater disposal in Pennsylvania provides basic information on approved, alternative and experimental land-based wastewater disposal and recharge systems.
   http://www.webdesignpros.net/consult/septic/septicsystem.htm

Septic Yellow Pages
   Septic system questions, answers and searchable directory of over 5,000 septic system professionals. Also includes a homeowner Septic System information section.
   http://www.septicyellowpages.com/

Texas Water Resources Institute
   Serves as a focal point for water-related research at Texas universities, encouraging discussion of statewide issues through meetings and multi-university studies. Includes calendar of events, newsletters, and reports.
   http://twri.tamu.edu/

The Septic System Owner's Manual
   A straightforward, easy to understand, non-scholarly book on residential wastewater disposal.
   http://www.shelterpub.com/_shelter/ssom_book.html