Drinking water in the community means that many people would dispose of waste in a bad way, they would create more pollution which is bad for the marine life, etc.
I think they could be solved if everyone could just follow the guidelines by recycling or doing good for the earth.
In the English-speaking part of the world, two-party system is the most common. For example, in the US the two parties are the Democrats and the Republicans.
In many other countries three-and multiple party systems are more common and it is uncommon that a government is not a coalition of two parties (with one or more parties in the opposition)
A group of powerful leaders