When people think of pollution or excess nutrients making their way into surface and groundwater systems, we often imagine industrial plants or large farms as the primary sources. But residents, businesses and visitors also contribute excess nutrients and other pollutants to South Florida's lakes, rivers and wetlands. Individuals and small businesses can reduce pollution in a number of ways: properly maintain local stormwater management systems; use fertilizers, herbicides and pesticides with care; and being aware of how easily household chemicals and other pollutants can be flushed into ground and surface water systems.