Why does running water make me need the toilet? - BBC Science

This ingenious machine turns feces into drinking water

The Dangers of Running Toilets - Priority Plumbing

Water politics - Wikipedia

Is the toilet seat really the dirtiest place in the home? - BBC News

Scientists have discovered the secret to why feces don't sink in water

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Here's why the sound of running water makes you want to pee

Why is saving water important? – Intelligent Hand Dryers

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