As the population increases, development pressures, especially in large urban centers, have created a lot of stress on ecosystems, and the ecosystem functions and services that they provide. Issues such as loss of wetland and paving over pervious surfaces has led to increased runoff, low infiltration rates and degradation of the quality of source and non-point source water. Roads, parking lots and other forms of impervious cover are the most significant contributors to stormwater runoff. Effective stormwater management is therefore crucial in such urbanized areas. Low Impact Development (LID) is an innovative stormwater management design philosophy and approach that is closely modeled after nature. Its main goal is to manage rainfall at the source using uniformly distributed, decentralized units such as permeable pavement, bioswales and green roofs. . The principle of LID is to mimic a site's pre-development hydrology by using design techniques that infiltrate, filter, store, evaporate and detain runoff close to the source. The term 'Green Infrastructure' is also used when referring to LID. LID can be used individually or incorporated into conventional stormwater management systems to achieve maximum benefits. Human health and well-being are fundamentally dependent on the services provided by the ecosystems that surround us. The field of ecohealth attempts to make this connection and use it to improve public health, promote resilient communities, and create more sustainable environments. This paper attempts to analyze the connections between three selected Low Impact Development and its effects on the ecosystem services that ultimately affect the health and wellbeing of humans in the Credit River watershed in Southern Ontario, Canada. Ecohealth theories developed by the Millennium Ecosystem Assessment (MEA) (2005; 2003) and the cascade model of ecosystem services (Haines-Young & Potschin, 2010; Braat & de Groot, 2012; Potschin & Haines-Young, 2010) were used to help develop and illustrate the concepts and relationships being researched
