Nazava Transparent 1 Water Filter
The Nazava Transparent 1 Water Filter is a two bucket system. Water is poured into the top container, filters through the ceramic candle filter into a safe storage container. There is a tap for dispensing treated water. The filter housing is fitted with either a Tulip or a Stefani brand ceramic candle filter.
Sales are primarily through a network of 122 local resellers who sell in different parts of the country. Sales are also through NGOs and direct sales.
~20 USD for the complete unit, ~8 USD for replacement candle filters
Other household water treatment methods and technologies marketed in Indonesia.
Households, individuals in Indonesia
Open source (candle filters may be patent protected).
About 70% of sales are through a network of 122 local resellers, who sell in different parts of Indonesia, including in remote regions, and also provide education about safe water and hygiene; 20% are distributed through NGO partnerships in Indonesia and elsewhere, and about 10% of filters are sold directly.
How often/when should maintenance be performed?
The Nazava Transparent 1 Water Filter is a two bucket system. Water is poured into the top container, filters through the ceramic candle filter into a safe storage container. There is a tap for dispensing treated water. The filter housing is fitted with one (or more depending on the housing model) Tulip or Stefani ceramic candle filters.
Available for purchase from retailer.
One filter candle can filter up to 7000 litres of water. Nazava provides a 1 year warranty, which is outlined in depth in their warranty document. Nazava simply advises users to throw away old filters.
Performance targets: Capable of removing 99.995% bacteria, >99.995% protozoa, and 99% turbidity. Flow rate is 2-3 Liters per hour.
Designer claims that the Nazava filters have been tested in 16 laboratories worldwide.
WLN Nord Lab confirms Nazava Manufactured specs of log 4.5 – log 5.5 removal of micro biological removal using standard ISO 9308-3. Independent laboratory test results in Indonesia and abroad can be found here
Two field studies on the Stefani filter were identified, one in Dominican Republic Household-Based Ceramic Water Filters for the Treatment of Drinking Water in Disaster Response: An Assessment of a Pilot Programme in the Dominican Republic and a field study of and the other evaluation on Stefani and Katadyn filters in Bolivia: Preventing diarrhoea with household ceramic water filters: Assessment of a pilot project in Bolivia.
Manufacturer states the Indonesian Ministry of Health has confirmed the effectiveness of Nazava filters through independent testing.
Filters have been tested in laboratories worldwide. Laboratory evaluation results can be found here:
‘Nazava Water Filters’ 2013 Laureate of The Tech Awards. Nazava Water Filters was the winner of the 2016 Ashden Award for Sustainable Energy and Water. They sell 11 different filter housing designs.
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