This document discusses single family treatment wetlands in Poland. It provides statistics on water and sewer access in Poland and notes that 15 million people lack access to sewer systems. It then discusses the need for single family treatment plants (STPs) as a solution. It describes three configurations of STPs tested in the town of Stężyca involving septic tanks and vertical and horizontal flow treatment wetlands. The results over four years showed good removal of organic matter, total nitrogen, and total phosphorus. Configuration II with sequential vertical flow beds performed best. Proper pre-treatment and sufficient contact time were important. STPs were an effective sustainable solution but owners were not willing to use reed sludge beds and authorities