Nazava Water Filter
Nazava is a two bucket system ceramic water filter with the storage capacity of 2*6 liters.
The Nazava Transparent Water Filter is a two bucket water filter system which was mainly developed as a emergency relief water filtration kit .However, they are widely being accessed as a household filter in many parts of Indonesia and The filter was first built by Lieselotte Heederik from Indonesia. The water is suitable for a single household with the storage capacity of 6 L and flow rate is to 2-3 L/hr.
Indonesia and Ethiopia.
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
Goal 6: Clean water and sanitation
The product is targeted mainly for household.
The ceramic candles are made locally in Indonesia.
Open source (candle filters may be patent protected).
About 70% of sales are through a network of several 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.
Description of the type of ceramic filter (pot, candle, or disk)
What primary material is used (ceramic, mud, clay etc.)?
Additional materials added to improve disinfection
Manufacturer-specified flow rate (L/hr)
Laboratory-evaluated log scale removal rate of bacteria
Laboratory-evaluated log scale removal rate of viruses
Laboratory-evaluated log scale removal rate of protozoa
Reduction levels of heavy metals and/or arsenic through this treatment system
Manufacturer-specified maximum level of inlet turbidity (NTU)
Range or value of outlet turbidity levels (NTU)
How often/when should maintenance be performed?
What is the total number of liters that is recommended can be filtered?
Is there safe water storage integrated into this product?
The Nazava Transparent Water Filter is a two bucket ceramic water filter system. It is mainly designed for household with 4 people.The specifications of the filter includes:
- Volume of storage : 2*6 L
- Flow speed: 2-3 L/hour
- Capacity: 7000 L before replacement
- Material of container: Polyethylene plastic
- Mechanism of water filter : Ceramic filtration with impregnation of silver to kill germs and Activated carbon to improve taste.
- Pore size: 0.4 micron
Manufacturer provides online training videos on proper use and maintenance of the units.
Available for purchase from retailer.
Nazava provides a 1 year warranty with the filter capacity of up to 7000 litres of water.
This filter was designed to reduce bacteria by 99.99%, >99.99% protozoa, and 99% turbidity. The product was also designed to provide a flow rate of 2-3 Liters per hour.
According to the laboratory test carried by WHO,the Nazava Water Filter provides protection against bacteria and protozoa only.
Several National and International organizations have tested the reliability of the Nazava filter.
Chaudhuri, M., Verma, S. R., & Gupta, A.,1994, Performance evaluation of ceramic filter candles, Journal of Environmental Engineering, 120(6), 1646-1651.
Zievers, J. F., & Zievers, E. C.,1993,Reinforced ceramic filter candle and method of making same, U.S. Patent No. 5,223,138. Washington, DC: U.S. Patent and Trademark Office.
Carlsen, M., & Waddell, K.,2016, Nazava Water Filters; Social Impact Assessment.
Holtslag, H., & Mc Gill, J. Practical ideas to reach SDG6.
Cadeddu, S. B., Donovan, J. D., Topple, C., De Waal, G. A., & Masli, E. K. (2019), Frugal Innovation and the New Product Development Process: Insights from Indonesia,Routledge.
Manufacturer states the Indonesian Ministry of Health has confirmed the effectiveness of Nazava filters through independent testing.
Filters have been tested in laboratories worldwide.
‘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.
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