Public utility, means that the property that is being talked about there is or was built for the benefit of all citizens, without distinction of any kind. For example a park in a city, is public utility for anyone who comes to the, can use it without having way that someone prevents it. A forest reserve is also because it oxygenates the city and also protects water sources. Both air and water, are for public use, or that the reserve is public utility.
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