José Fernando Mazariegos Anleu (21 March 1938 – 2 June 2018) was a Guatemalan inventor and engineer best known for designing the Ecofilter, a low-cost household drinking-water filter. He developed the device in 1990 as part of a project at the Central American Institute of Industrial Research and Technology (ICAITI). His work focused on practical, affordable technologies intended to reduce the risk of waterborne disease in communities with limited access to safe municipal water.

Early career and development

Mazariegos combined an engineering background with applied research at ICAITI and related institutions. The Ecofilter emerged from efforts to adapt filtration technology to local manufacturing methods and household needs. The design process prioritized simplicity, durability and materials that could be produced or sourced regionally so the unit could be distributed at low cost and maintained without complex spare parts.

Design and characteristics

The Ecofilter is a gravity-driven household filter intended to remove pathogens and suspended particles from water before consumption. Its basic features include:

  • a porous filtration element that traps contaminants;
  • a two-chamber arrangement allowing treated water to collect separately from the raw input;
  • construction from low-cost materials suitable for local production;
  • an emphasis on simple cleaning and maintenance by the end user.

Uses and impact

The Ecofilter was promoted for use in rural and peri-urban households, humanitarian relief settings, and development programs seeking to lower incidence of diarrheal illness. Because it functions without electricity and requires minimal user training, the device was attractive to non-governmental organizations and community health initiatives. Over time it became one of several practical point-of-use water treatment options recommended in areas lacking reliable centralized water treatment.

Legacy and recognition

Mazariegos is remembered for applying engineering principles to a public-health problem in a way that emphasized accessibility and local production. The Ecofilter illustrates how modest technological innovations, aligned with community needs and appropriate manufacturing, can produce measurable public-health benefits. For further background and resources about his life and the Ecofilter project, see the available profiles and technical summaries such as Fernando Mazariegos profile.