Toilets   

Toilets are an opportunity to reclaim plant nutrients from food which has been partially "processed" by humans. Instead, they are more often used to create water pollution or to contaminate the envirnoment and spread disease.

Ecosanitation and composting toilets are attempts to close the nutrient cycle.

[edit] See also

• Sanitation
• Plumbing
• Pipes
• Wastewater treatment
• Water

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