This paper examines the use of constructed wetlands for water purification. The introduction begins witha brief overview of wetlands: their nature and services offered. These wetlands are ecoststems with water that is static or flowing and characerized by emergent , floating and submerged aquatic vegetation.

A model for the wetland part of KNP is presented and analyzed. Two-dimensional parameter scans suggest that this minimal model possesses dynamical complexities. Per capita availability of water to