Watsan matters

https://www.emergency-wash.org/water/en/technologies/technology/arsenic-removal-filter

👉🏼 PDF: https://app.box.com/s/pgv9weqik9fuj1oumk2uz8e56zj5ierl

Arsenic is a groundwater contaminant naturally present in rocks and soils, though may also result from industrial activities. When present at levels over 10 μg/L, arsenic can detrimentally impact human health and should be addressed as soon as possible. It can be removed from groundwater by oxidation followed by filtration, precipitation, adsorption, ion exchange processes or reverse osmosis.

https://www.emergency-wash.org/water/en/technologies/technology/fluoride-removal-filter

👉🏼 PDF: https://app.box.com/s/esbgo5jd8m25bfo7gphw05m97a3ly391

Fluoride is a groundwater contaminant naturally present in rocks and soils (commonly volcanic-derived sediments). At levels over 1.5 mg/L, it can detrimentally impact human health. As the health impacts result from prolonged consumption, Fluoride Removal is mostly relevant for the recovery phase and protracted emergencies.

https://www.emergency-wash.org/water/en/technologies/technology/solar-disinfection-sodis

👉🏼 PDF: https://app.box.com/s/45wnkypsqd5la5p96fd91fnv51qkryia

Solar Water Disinfection (SODIS) purifies low turbidity water for drinking purposes through a combination of heat, ultraviolet (UV) irradiation and visible light radiation given by solar energy. It is appropriate for disinfecting small quantities of water with a low turbidity.

https://www.emergency-wash.org/water/en/technologies/technology/ultraviolet-uv-lamp

👉🏼 PDF: https://app.box.com/s/cg3k6u6n4o7ujsth7urn238fe7y8192a

A UV Lamp is a non-chemical means of disinfecting water at household level, effective against all classes of pathogens and requiring only seconds of contact time. It uses short-wavelength UV irradiation in the range of 200–300 nm generated from mercury lamps or from UV light-emitting diodes (LEDs).