Overview   Infiltrator Water Technologies (IWT) is a market leader within the onsite wastewater treatment industry, Infiltrator manufactures a variety of revolutionary products and innovative, environmentally friendly alternatives to traditional stone and pipe leachfield and concrete septic wastewater system components. IWT is a wholly owned subsidiary of Advanced Drainage Systems (ticker: WMS, NYSE).   The majority of our products are produced almost entirely from recycled resins. Infiltrator's recycling operation is among the country's top twenty producer