Arsenic in Nicaragua

The World Health Organization and the United Nations Children’s Fund (WHO/UNICEF) developed a low-cost method for rapidly assessing the quality of drinking-water in a country. Nicaragua was one of the six countries that volunteered to host pilot projects to test the new method, termed a Rapid Assessment of Drinking-Water Quality (RADWQ) survey.

Arsenic contamination was one of the elements included in the study, whose results provides a statistically representative snapshot of the water and sanitation status of Nicaragua.

Screen Shot 2014-07-11 at 10.35.30 AM

Also, In November, 2010, we installed the first ACI arsenic-reduction filters in the Camoapa region in Nicaragua.  This effort was the result of our ongoing work alongside El Porvenir in their placement of wells. The staff of El Porvenir confirmed the RADWQ study that there is ground water contaminated with arsenic in some of its communities, not an unusual occurrence as the existence of arsenic is widespread as it is a natural component of volcanic rock which abounds in the country.

This first effort comprised an inexpensive but highly effective technology to capture arsenic and cause it to become inert.  The filter is smaller than the traditional ACI biosand filter, and is to be used as a secondary filtration device after water is first cleaned by the biosand filter.

Constructing Arsenic Filters in the Field

Constructing Arsenic Filters in the Field

An Arsenic Filter Next to a Bio-Sand Filter

An independent analysis of the filters was done following their installation by the Department of Chemistry of the National Engineering University and found that the concentration of arsenic fell from over 50.0mg./l to 00.0mg/l.

Additional information describing this initiative is found in our Arsenic section under “What We Do”

In April of 2015, our Nicaraguan partner AquaNic, built ACI Household Arsenic Filters for the homes of Achuapa, Leon, Nicaragua. With WHO standards at 10 ppb, the local well for the households had arsenic levels higher than 100 ppb.

Together with a local Nicaraguan NGO, El Provenir, we supplied 14 ACI Household Arsenic Filters  to go along with their recently made ACI biosand filters. It was a very successful project and we hope to make many more throughout the country.


Presenting how to use newly made ACI Household Arsenic Filters in Achuapa, Leon, Nicaragua