Reducing Contamination by Improving Household Wastewater Treatment
Fact sheet on septic systems and their proper maintenance, particularly to prevent environmental contamination.

Greywater facts
Technical information on greywater characteristics, Clivus greywater system designs.

Frequently Asked Question about Onsite Wastewater Treatment and Disposal Systems
About septic systems and other small-scale onsite wastewater management.

Common Greywater Errors and Preferred Practices
About greywater reuse, focusing on misconceptions and what can go wrong.

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.

On-Site Wastewater Research Program
Site has information on septic system technology and other onsite sewage treatment options. (Nova Scotia provincial research program.)

Septic Protector
How septic systems function, what causes them to fail, information and products to help prevent them from failing.

The Septic System Owner's Manual
A straightforward, easy to understand, non-scholarly book on residential wastewater disposal.

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.

Decentralized Wastewater Treatment
About septic systems and other treatment systems suitable for households, residential subdivisions, and other dwelling clusters, including innovative technologies. From Tennessee Valley Authority.

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

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.

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

Greywater Information Central
Extensive information about grey water systems: Why to use them, how to choose, build and use them, graywater regulations, studies, and examples.

Greywater Policy Central
Information about legal aspects of grey water systems, inspections, codes, permits and case studies.

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.

OnSite Sewage Treatment Program
Comprehensive information source on standard and alternative septic systems and technology research and demonstration, with particular focus on Minnesota.

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.

Recycling of Greywater
How to process greywater from shower for toilet flushing in a simple and sustainible way.

Septic-Info.Com
Comprehensive information resource about septic system technology and care, intended for homeowners and commercial septic owners/operators.

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.