There are significant municipal concerns relating to use surfactants and enzymes in the process of wastewater treatment. Treatment plants utilize different techniques to rid water of impurities.While wastewater treatment plants use the latest technology to remove contaminants from water, there are high costs, and sometimes an enforcement of regulations is lax. Still, many municipalities across the country are banning the use of surfactants and enzymes entering wastewater treatment because of the harmful effects these products have on the sewer lines and the damage costs much money. Surfactant compounds are organic. Their molecules include a water-soluble and oil or insoluble component. These molecular compounds seek the water surface and chemically reduce the boundaries between oil and water. When surfactants are in the water, they absorb into the soil and can cause injury to plants and organic organisms, but people find surfactants and enzymes useful in cleaning agents for emulsifying and dispersing oil and grease. The scientists have found that at least some surfactants are toxic to ecosystems, people and animals, but they have not been able predict the far-reaching consequences. And now the most important question is "How we can solve this problem?" or "How we can reduce these negative effects?" In this paper we tried to remove surfactants from waste water with an activated sludge system.