Water Technology


EOS International’s water purification technology is a low-cost, low-maintenance solution that attaches to any rural community’s water tank and inactivates pathogens in water systems by releasing a controlled dosage of chlorine. One system can provide safe drinking water for up to 1,000 community members and requires no electricity to use.

  • Water Source Requirements

    EOS International's water purification system is designed for use in rural areas with a gravity fed water system having a flow rate between 2 and 20 gallons per minute. The water supply should have minimal organic material present and turbidity levels of less than 5 NTUs.

  • Materials Needed

    EOS' water chlorinator uses inexpensive, locally sourced materials including PVC piping, T-joints, caps, pipe adhesive, and ball valves. In addition to raw materials, plans, templates, instructions, and trainings are provided to communities, ensuring projects' long-term success.

  • Disinfectant Used

    The communities EOS serves use locally sourced chlorine tablets (Calcium hypochlorite or Trichloro-Isocyanuric Acid) to disinfect their drinking water. It is important to note that the tablets must be approved for human consumption and tested in the unit to dissolve at a slow rate.

Water Analysis

With our dedicated staff, EOS is able to test the quality of water both in the field and at our advanced water labs in our centrally located Nicaragua and Honduras offices.

Our Results

Municipality Achieves 49% Reduction in Diarrhea with EOS Partnership

In January 2018, EOS installed 70 chlorinators in the municipality of El Tuma-La Dalia, Nicaragua in collaboration with the Nicaraguan Ministry of Health, FIDER (a Nicaraguan NGO), and 70 neighboring community water boards. This is the first time that EOS’ water quality solutions have been implemented exclusively throughout an entire municipality, providing water chlorinators for all 70 community piped water systems in the municipality.

Eight months after the implementation, the Ministry of Health prepared an independent study to compare reported cases of diarrhea in the municipality of El Tuma-La Dalia from January 1st to August 26th in 2017 and 2018.

According to their own public health data, the municipality has achieved a 49% reduction in reported cases of diarrhea in 2018, since the installation of EOS’ systems. The largest reduction in cases fell in the age range of 5-9 year olds, who experienced 73% fewer reported cases of diarrhea. That translates to 88 children who reported sickness in 2017 and have been healthy in 2018.

These results point to a significant improvement in the municipality’s public health. This includes a major reduction in the healthcare system burden, specifically 203 fewer healthcare visits. Community productivity is increased where adults are able to work without being forced to stay at home sick, and children are not having to miss school because they do not feel well.

According to the World Health Organization, diarrheal disease is the second leading cause of death globally for children under the age of five. It is both preventable and treatable, as El Tuma-La Dalia has demonstrated. A significant proportion of diarrheal disease can be prevented through safe drinking water and adequate sanitation and hygiene.

This achievement is attributable to numerous factors including: key leadership at the community level, continual water treatment, organizational partnerships, oversight from Ministry of Health, appropriate technology, and diligent training.  EOS’ staff has been instrumental in facilitating these outcomes throughout the term of the study. The team is using this successful municipality as a benchmark tool to help provide similar positive results in neighboring municipalities. This is a great example of what can be accomplished when government, community leaders, and partners work towards a common goal.


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