Technology
Technology can be used in many cases to reduce or eliminate substances that may be harmful to the environment. Sewage treatment plants, properly operated and maintained, are a means of removing many toxic substances from wastewater and returning the treated water to a river or lake without causing harm downstream. Water treatment plants can take river or lake water and make it fit for drinking.
But what happens when contaminants are not removed, even by the most modern water treatment methods? They may be present only in minuscule quantities, but because they are persistent, they can build up to very harmful levels. In such cases, we can protect future generations and the ecosystem as a whole in only one way: preventing the chemicals from entering the water system.
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