![Evaluation of low-cost alternatives for water purification in the stilt house villages of Santa Marta's Ciénaga Grande - ScienceDirect Evaluation of low-cost alternatives for water purification in the stilt house villages of Santa Marta's Ciénaga Grande - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2405844019367210-gr4.jpg)
Evaluation of low-cost alternatives for water purification in the stilt house villages of Santa Marta's Ciénaga Grande - ScienceDirect
![Water | Free Full-Text | Review of Slow Sand Filtration for Raw Water Treatment with Potential Application in Less-Developed Countries Water | Free Full-Text | Review of Slow Sand Filtration for Raw Water Treatment with Potential Application in Less-Developed Countries](https://www.mdpi.com/water/water-15-02007/article_deploy/html/images/water-15-02007-g001.png)
Water | Free Full-Text | Review of Slow Sand Filtration for Raw Water Treatment with Potential Application in Less-Developed Countries
![Low tech drain and outlet for mortared stone water tank | Water purification system, Water purification, Water storage tanks Low tech drain and outlet for mortared stone water tank | Water purification system, Water purification, Water storage tanks](https://i.pinimg.com/736x/56/f3/5e/56f35e396a553a9361099378340c22e9.jpg)
Low tech drain and outlet for mortared stone water tank | Water purification system, Water purification, Water storage tanks
![MIT engineers make filters from tree branches to purify drinking water | MIT News | Massachusetts Institute of Technology MIT engineers make filters from tree branches to purify drinking water | MIT News | Massachusetts Institute of Technology](https://news.mit.edu/sites/default/files/download/202103/MIT_Xylem-Filters-01-PRESS.jpg)