To reduce water pollution when disposing of household chemicals such as motor oil you should

Take used oil to a recycling center.

Explanation:

Many people are unaware of the fact that the way in which you dispose your household chemicals can have an important effect on water pollution. Often, the items you dispose can find their way to rivers and lakes, polluting the natural environment. One way in which you can reduce this damage is by taking certain household chemicals that you want to dispose of, such as motor oil, to a recycling center.

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