👁️🗨️ Source /--> S3 - Ponds, lakes and reservoirs.
👉🏼 ** https://www.emergency-wash.org/water/en/technologies/technology/ponds-lakes-and-reservoirs**
https://www.emergency-wash.org/water/en/technologies/technology/ponds-lakes-and-reservoirs
👁️🗨️ Source : GWN - GERMAN TOILET ORGANIZATION e.V. © : www.washnet.de
****👁️🗨️ https://linktr.ee/watsan_matters