Activated Sludge Microorganisms
Discusses and illustrates the organisms in sludge, and what can be learned by microscopic analysis of biological treatment systems for wastewater.

Ames, Iowa Water and Pollution Control Department
Drinking water and wastewater treatment provider for the City of Ames, Iowa

Association of Metropolitan Sewerage Agencies (U.S.)
Has current news and information about clean water issues (such as nonpoint source pollution and radioactivity in municipal wastewater), as well as resources for POTW operators.

Camden County Municipal Utilities Authority
The CCMUA treats 55-60 million gallons per day of wastewater in Camden County, NJ, USA. Topics run from industrial pretreatment to sludge disposal.

Cap-Net.Org
Water education and training, integrated water resources management, IMRM, IWRM, reports, training material, case studies, information, specialists, global water partnership, capacity building in IWRM, database of global water management, training institutes.

CIPCA
Colorado Industrial Pretreatment Coordinators Association

Clean River Works, Portland's Combined Sewer Overflow Program
A collection of sewer projects for reducing CSOs from the west side of the Willamette River in Portland, Oregon.

Database Central
Wastewater organisms database.

Ecowaters Projects
CEPP conducts workshops, demonstrations, evaluation and public education about ecological wastewater solutions, such as composting toilets and graywater systems.

Flush Gordon's Wastewater Page
Introduction to water pollution, wastewater treatment, and water analysis. Useful as an educational resource, with diagrams and many links.

Iowa Water Pollution Control Association
Design, construction, operation, and management of water pollution control works and exchange of information.

Irepolia Environmental studies and analysis center
Conducts research and technology development on wastewater treatment methods. Site is in English and French.

Key West Project
About Key West's wastewater treatment project (treatment and deep well injection of treated effluent) and about wastewater and its treatment, in general.

King County Industrial Waste Program
How the county (Washington state, USA) regulates industrial discharges into its wastewater system, including discharge limits, approvals, enforcement, and fees.

Living Technologies Ltd.
Designs and builds ecological wastewater treatment systems called 'Living Machines in UK.

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