Air Diffusion Systems is a third generation, family-owned company located in Gurnee, Illinois. For more than 60 years, we have specialized in developing and promoting natural and sustainable water and wastewater treatment technologies. Our mission is to promote the natural treatment of water and wastewater around the world by working with individuals, communities, businesses, and municipalities to meet their needs with innovative technology and over 60 years of engineering and manufacturing expertise. ADS is committed to our clients for the long-haul. We are the only aeration manufacturer to offer a written 5-year product and treatment warranty that our engineered solution will deliver the results you have been searching for, or we will fix it at no additional cost. Every installation is important to us, and this is our way of saying thank-you for becoming part of the ADS family.