| 4EcoInfo -- Distributors of air and water purification systems worldwide. Features product info and photos.
| AccuAire Air Treatment Systems -- Air treatment system available with an air quality sensor to control units operation. No filters to replace or plates to clean.
| Air and Water Technology, Inc. -- Information on indoor air and water contaminants and removal strategies using 'natural' technologies.
| Allergy-Free -- Offers products and services designed to enhance the home and workplace by eliminating environmental contaminants.
| Atlantic Ultraviolet -- Manufactures ultraviolet air wand water purification units since 1963.
| Biltwel -- HVAC duct cleaning equipment.
| CrispAir -- Offers duct mounted sanitizers designed to disinfect the air and destroy existing mold, mildew, germs and airborne viruses that are growing in ductwork.
| Crystal Air -- Provides commercial and domestic ozone generators and purifiers for air and water purification.
| DP Filters -- Providing commercial and industrial accounts in Northern and Central Illinois with air filtration products and services.
| Ecologix Environmental Systems -- Offering air and water purification as well as wastewater treatment and recycling systems.
| Enprotec Corporation -- Provider of products and services for the removing toxic chemicals and pollutants from the air and water.
| Group AT Export, SA -- Disinfection and deodorization of water and air and ozonization systems of reduced coefficient.
| Inter Ozono -- Manufactures air and water treatment systems for commercial and industrial use.
| IQAir -- Air cleaning solutions and product information.
| Manor Respiratory -- Provides CPAP, Oxygen, filters and other related Respiratory products.
| Natralite Filters, Inc -- Light filters put melanin back into artificial light.
| Natural Solutions Environmental, Inc. -- Since 1994 providing over fifty air and water products for home, office and commercial use.
| Ozone Industries-UK -- A UK designer and manufacturer of ozone generators for commercial and domestic air and water purification.
| Puritec -- Providing information and solutions for indoor air pollution and water pollution. Offering air cleaners and water filters ranging from small home usage to most industrial applications.