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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 producers/consumers of recycled resins and among... more ->