TATA Swach Smart
TATA Research, Development & Design Centre & Tata Chemicals
A low-cost water purifier for households in India.
The TATA Swach Smart Nanotech Water Purifier is a household, gravity driven water purifier that uses the Silver Nano-Technology to remove bacteria and viruses from drinking water.
Some competitors include: Sujal, priced at $2.36 (with replaceable filter bed at $0.40); Kent Gold UF Membrane Filter priced at Rs. $125 – $141.40 USD; Hindustan Lever PureIt (battery operated); Eureka Forbes AquaSure Amrit; cloth and jali mesh filters.
Goal 6: Clean water and sanitation
The product is designed to target BoP customers but the majority of purchasers are working class, lower to middle income Indians, who do not have access to a safe drinking water source.
IP Protected (patent unknown).
According to a TATA disclaimer: TATA does not take responsibility of the product performance in case of “unreasonably discounted Tata Swach products” sold by sources not authorised by TATA including e-commerce websites and portals. Authorised service providers include Olympia distributor on Amazon.com and WS retail on Flipkart.com.
The TATA Swach filter is comprised of two parts. The upper part contains reservoir where the untreated water enters and is pre-filtered via the top mesh – TATA Swach MF membrane – which is a micro-mesh systems that remove the visible impurities. The lower middle portion has the TATA Swach Bulb to which the cartridge can be attached. The primary filtering component of the Tata Swach Smart water-purifier is the TATA Swach Bulb. The TATA Swach bulb is densely compacted with processed rice husk ash impregnated with activated silica coated with silver nanoparticles that destroys harmful bacteria and viruses from water.
Another reservoir is placed at the lower end, which collects clear water. The whole system acts on gravity and electricity or constant flow of water is not required. The upper chamber can be easily cleaned. Depending on the quality of water about 1500 Litres can be filtered after which the cartridge can be replaced. Once purifying capacity is exhausted the Swach bulb fuses and prevents water from passing. The lower storage container has a maximum capacity of 15 Litres.The flow rate of the filter is 3-4 litres per hour.
Total weight 1.7 kgs (3.75 lbs)
Minimal training required. Support is provided by TATA.
The Bulb must be replaced at the end of its life and may be purchased online. The following components are available at local retailers: Top Mesh, Top Container, Bottom Container, Tap, Adapter, Bottom Mesh.
1500 L. No warranty information found.
Silver nanotechnology that destroys harmful bacteria and viruses to yield safe drinking water. The filter cartridge lifetime of 1500 L.
It is stated that the product has been tested across reputed laboratories in India, the UK and the Netherlands as per US-EPA standards. However, no documentation sources any performance finding available at this time.
The Comprehensive Initiative on Technology Evaluation (CITE) at MIT evaluated household water filters available on the market in Ahmedabad, India in summer 2014. Full findings are available in this report.
Organizations include: Central Food Technological Resarch Institute (CFTRI), Mysore RD Analytical (UK); Haffekine, Mumbai Microtech Services, (UK); IADFAC, Bangalore AES, (UK); Serum Institute, Mumbai Vitens, (Netherlands) and Intertek Labs, (Mumbai)
Tap contamination is possible if not maintained properly.
Clean water storage container
How often/when should maintenance be performed?
He, D., et al., Synthesis and Characterization of Antibacterial Silver Nanoparticle-Impregnated Rice Husks and Rice Husk Ash, Environ. Sci. Technol., 2013, 47 (10), pp 5276–5284.
The Tata Swach MF membrane is certified according to Japanese Industrial Standard (JIS) S 3201:2004
The system meets US Environmental Protection Agency (US EPA) National Primary Drinking Water Regulations (NPDWRs or primary standards)
Independent lab analysis of filtered water.
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