Water Safety / Water Filtration

biosand water filter

In Barrio La Cruz many people experience diarrhea, parasites and other waterborne illness due to the lack of safe drinking water. According to the World Health Organization dehydration from diarrhea is leading cause of death especially among children. Only about 15% of the families in Barrio La Cruz can afford to purchase filtered drinking water. The community cooks and uses unfiltered water.

Paso a Paso installs bio-sand water filters in homes to provide clean water. These filters can be assembled locally and last much longer than traditional plastic filters. They remove over 98% of bacteria and 100% of parasites. We have currently put in 4 filters. These filters are the only source of clean water in the community.

A water filter can be put in for $30. A water filter mold can be bought for $400. We need a mold to produce the filters at a lower cost. Families are required to pay a small percentage of the cost (apx. $2) and they are trained to use the water filtration system. The training opens opportunities to build relationships and to share the gospel.

Bio-Sand Water Filters:

Will Remove:

  • Parasites including Giardia & Cryptosporidium
  • Bacteria including fecal coliform
  • Viruses
  • Iron (and iron bacteria)
  • Manganese
  • Methane
  • H2S and other gases
  • Turbidity due to suspended particles such as silt and clay
  • Foul taste
  • Odor
  • Toxins
  • Colour

Can Treat:

  • Water from ponds, lakes, cisterns, reservoirs, rivers, streams
  • Water from shallow and deep wells
  • Rainwater
  • Spring water
  • Unsafe water from piped systems
  • Unsafe delivered water
  • Grey water

Make a Difference! Donate a Bio-Sand Water Filter Today and Impact Lives!


  • Reduce health care costs
  • Better productivity for users
  • Improved quality of life
  • Affordable
  • Sustainable
  • In-country manufacturing
  • Measurable performance
  • Meets an unfulfilled basic need