iSTREEM^® is an in-stream environmental exposure model which predicts the concentration of a chemical used in "down-the-drain" products. It is a tool to promote product stewardship and regulatory compliance for chemical suppliers and manufacturers of formulated products of all sizes across commodity groups.

Predicted environmental concentrations are calculated for the continental United States, China, and Japan:

• At the discharge of wastewater treatment plants
• In streams and rivers
• At the intake of downstream municipal drinking water treatment facilities (where data is available)