👁️‍🗨️  Source /--> S7 - Gravity.

👉🏼 https://www.emergency-wash.org/water/en/technologies/technology/gravity

https://www.emergency-wash.org/water/en/technologies/technology/gravity

👁️‍🗨️  Source : GWN - GERMAN TOILET ORGANIZATION e.V. © : www.washnet.de

**https://www.emergency-wash.org/water/en/technologies**

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