Safi Water Filters

Safi Water Treatment Solutions

Safi Water Filters are ceramic filters designed for households and community purposes in 2 size models.

Discontinued

Snapshot
Manufacturing & delivery
Performance & use
Research & standards
Feedback

Product description Brand name and product description

Safi Water Filters are tabletop ceramic filters that come in two size ranges, the T9 Family Water Filter with a capacity of 18 liters suitable for a family and the T20 Group Water Filter with a capacity of 40 liters ideal for large families, clinics, offices, etc. These filters treat and store the water safely until consumption. This product has been discontinued as of 2020.

Target region(s) Target region for distribution/implementation (listed by country if specified)

This product is mainly distributed in Malawi. However, it is also exported to Zimbabwe, Ethiopia, Sudan, Somalia, and Afghanistan.

Distributors/implementing organizations Organization(s) distributing/deploying this product directly to communities/individuals?"

Safi Water Treatment Solutions

Market suggested retail price Price per unit or service price per usage/terms (USD). Subsidies noted.

Unknown

Competitive landscape Similar products available on the market. May not be a comprehensive listing.

Tabletop filters such as Kohler Clarity, Tulip Table Top Filter, and Rainfresh MP4U Gravity Filter.

SDG targeted United Nations Sustainable Development Goals (SDGs) targeted with this product/application/service

Goal 6: Clean water and sanitation

Target user(s) Target user/consumer base (country, income segment)

Households and small group communities

Manufacturing/building method(s) Detail regarding solution production or construction method (instructions, mass production capacity, custom made,etc...)

The product is locally manufactured in bulk in Malawi by Safi Water Treatment Solutions.

Product Intellectual Property Open source/IP protected (note patent)/trade secret/other?

Registered brand

User Provision Model Where can the product be purchased/acquired by end users?

Users can obtain the product by contacting Safi Water Treatment Solutions.

Distribution to date Number of units that have been deployed, downloads or users to date

Unknown

Fields marked are sourced values that have been evaluated by the manufacturer or a third party, all others are design specifications.

Type of filter

Description of the type of ceramic filter (pot, candle, or disk)

Ceramic candle filter

Primary material of construction

What primary material is used (ceramic, mud, clay etc.)?

Ceramic filter element contains colloidal silver and activated carbon

Additives

Additional materials added to improve disinfection

Heavy elements and chemical compounds

Manufacturer-specified flow rate (L/hr)

1.2-2.5 L/hr

Bacteria reduction

Laboratory-evaluated log scale removal rate of bacteria

2 log

Virus reduction

Laboratory-evaluated log scale removal rate of viruses

Unknown

Protozoa reduction

Laboratory-evaluated log scale removal rate of protozoa

Unknown

Heavy metals and/or arsenic reduction

Reduction levels of heavy metals and/or arsenic through this treatment system

Unknown

Maximum recommended influent turbidity level (NTU)

Manufacturer-specified maximum level of inlet turbidity (NTU)

Less than 30

Effluent turbidity levels (NTU)

Range or value of outlet turbidity levels (NTU)

Unknown

Maintenance schedule

How often/when should maintenance be performed?

Every year

Manufacturer-specified lifetime volume (L)

What is the total number of liters that is recommended can be filtered?

T9 model: 7000 L

Safe water storage integration

Is there safe water storage integrated into this product?

T9 model: 9 L; T20 model: 20 L

Design specifications Component and Operation overview including power, portability, facility requirements, preventative maintenance and user training requirements

The filter consists of two chambers, one for pouring feed water and another for collecting filtered water. The T9 model has the capacity to hold 9 L of safe drinking water where as T2o has 20 L of safe drinking storage capacity. For the filtration, water is poured into the upper container and allowed to rest 3-5 hours as the flow rate is 1.5- 2.5 L per hour. The water then passes through the uniform pore sized ceramic candle and is collected in bottom shelve of water container.

Product schematics Design and assembly illustrations

The water filter consists of an imported ceramic element and tap, installation hardware, two locally produced plastic containers and a locally produced filter cleaning brush.

Technical support Technical support provided by

None available, this product is discontinued.

Replacement components Availability of replacement components (in-country, by order,...)

Replaceable components include the ceramic candle filter.

Lifecycle Disposal and warranty

1 year

Manufacturer specified performance targets Designer / Manufacturer specified targets

This filter was designed to reduce bacteria by 99% and store the filtered water in a sealed container.

Vetted performance Findings of manufacturer evaluations or independent testing centers

Testing performed by the National Microbiology Reference determined a safe reduction in coliform contamination and did not show regrowth of bacterial colony in safe storage water.

Testing organizations Independent lab, academic research centers, etc.

National Microbiology Reference Laboratory in Malawi.

Safety Potential hazards / risks related to operation of this product

No known safety hazards are related to this product.

Complementary technical systems Performance of this product is improved with another technology (eg. Cookstoves and Wind-blocking skirts)

None

Academic research Academic research related to the product (e.g. published papers in peer-reviewed journals)

Fewtrell, L et al., 2017, A re-assessment of the safety of silver in household water treatment: rapid systematic review of mammalian in vivo genotoxicity studies, Environmental Health, 16(1), p.66.

Chaudhuri, M et al., 1994, Performance evaluation of ceramic filter candles, Journal of Environmental Engineering, 120(6), pp.1646-1651.

Oyanedel et al., 2008, Sustainable colloidal-silver-impregnated ceramic filter for point-of-use water treatment, Environmental science & technology, 42(3), pp.927-933.

Butkus, M.A et al., 2003, The efficacy of silver as a bactericidal agent: advantages, limitations and considerations for future use, Journal of Water Supply: Research and Technology—AQUA, 52(6), pp.407-416.

Compliance with regulations Product certifications and standards referenced by designer/manufacturer

The product is certified by the Ministry of Health, Malawi, and complies with the Malawi Bureau of Standards for drinking water.

Evaluation methods Evaluation methods/protocols/guidelines referenced by designer or manufacturer.

The product is evaluated for removal of turbidity and bacteria in a certified laboratory, the National Microbiology Reference Laboratory. The product is also tested as a Household Water Treatment and Safe Storage (HWTS) solution.

Other information

Safi Water: filter manual and assembly video.

In context photographs (0)

You can use the form below to contribute a photo of this product.

In context files & documents (0)

Feedback from users, customers & distributors

Please let us know your experience in using this product through comments below.

Snapshot

Product description Brand name and product description

Target region(s) Target region for distribution/implementation (listed by country if specified)

This product is mainly distributed in Malawi. However, it is also exported to Zimbabwe, Ethiopia, Sudan, Somalia, and Afghanistan.

Distributors/implementing organizations Organization(s) distributing/deploying this product directly to communities/individuals?"

Safi Water Treatment Solutions

Market suggested retail price Price per unit or service price per usage/terms (USD). Subsidies noted.

Unknown

Competitive landscape Similar products available on the market. May not be a comprehensive listing.

Tabletop filters such as Kohler Clarity, Tulip Table Top Filter, and Rainfresh MP4U Gravity Filter.

SDG targeted United Nations Sustainable Development Goals (SDGs) targeted with this product/application/service

Goal 6: Clean water and sanitation

Target user(s) Target user/consumer base (country, income segment)

Households and small group communities

Manufacturing & delivery

Manufacturing/building method(s) Detail regarding solution production or construction method (instructions, mass production capacity, custom made,etc...)

The product is locally manufactured in bulk in Malawi by Safi Water Treatment Solutions.

Product Intellectual Property Open source/IP protected (note patent)/trade secret/other?

Registered brand

User Provision Model Where can the product be purchased/acquired by end users?

Users can obtain the product by contacting Safi Water Treatment Solutions.

Distribution to date Number of units that have been deployed, downloads or users to date

Unknown

Performance & use

Fields marked are sourced values that have been evaluated by the manufacturer or a third party, all others are design specifications.

Type of filter

Description of the type of ceramic filter (pot, candle, or disk)

Ceramic candle filter

Primary material of construction

What primary material is used (ceramic, mud, clay etc.)?

Ceramic filter element contains colloidal silver and activated carbon

Additives

Additional materials added to improve disinfection

Heavy elements and chemical compounds

Manufacturer-specified flow rate (L/hr)

1.2-2.5 L/hr

Bacteria reduction

Laboratory-evaluated log scale removal rate of bacteria

2 log

Virus reduction

Laboratory-evaluated log scale removal rate of viruses

Unknown

Protozoa reduction

Laboratory-evaluated log scale removal rate of protozoa

Unknown

Heavy metals and/or arsenic reduction

Reduction levels of heavy metals and/or arsenic through this treatment system

Unknown

Maximum recommended influent turbidity level (NTU)

Manufacturer-specified maximum level of inlet turbidity (NTU)

Less than 30

Effluent turbidity levels (NTU)

Range or value of outlet turbidity levels (NTU)

Unknown

Maintenance schedule

How often/when should maintenance be performed?

Every year

Manufacturer-specified lifetime volume (L)

What is the total number of liters that is recommended can be filtered?

T9 model: 7000 L

Safe water storage integration

Is there safe water storage integrated into this product?

T9 model: 9 L; T20 model: 20 L

Design specifications Component and Operation overview including power, portability, facility requirements, preventative maintenance and user training requirements

Product schematics Design and assembly illustrations

The water filter consists of an imported ceramic element and tap, installation hardware, two locally produced plastic containers and a locally produced filter cleaning brush.

Technical support Technical support provided by

None available, this product is discontinued.

Replacement components Availability of replacement components (in-country, by order,...)

Replaceable components include the ceramic candle filter.

Lifecycle Disposal and warranty

1 year

Manufacturer specified performance targets Designer / Manufacturer specified targets

This filter was designed to reduce bacteria by 99% and store the filtered water in a sealed container.

Vetted performance Findings of manufacturer evaluations or independent testing centers

Testing performed by the National Microbiology Reference determined a safe reduction in coliform contamination and did not show regrowth of bacterial colony in safe storage water.

Testing organizations Independent lab, academic research centers, etc.

National Microbiology Reference Laboratory in Malawi.

Safety Potential hazards / risks related to operation of this product

No known safety hazards are related to this product.

Complementary technical systems Performance of this product is improved with another technology (eg. Cookstoves and Wind-blocking skirts)

None

Research & standards

Academic research Academic research related to the product (e.g. published papers in peer-reviewed journals)

Fewtrell, L et al., 2017, A re-assessment of the safety of silver in household water treatment: rapid systematic review of mammalian in vivo genotoxicity studies, Environmental Health, 16(1), p.66.

Chaudhuri, M et al., 1994, Performance evaluation of ceramic filter candles, Journal of Environmental Engineering, 120(6), pp.1646-1651.

Oyanedel et al., 2008, Sustainable colloidal-silver-impregnated ceramic filter for point-of-use water treatment, Environmental science & technology, 42(3), pp.927-933.

Compliance with regulations Product certifications and standards referenced by designer/manufacturer

The product is certified by the Ministry of Health, Malawi, and complies with the Malawi Bureau of Standards for drinking water.

Evaluation methods Evaluation methods/protocols/guidelines referenced by designer or manufacturer.

Other information

Safi Water: filter manual and assembly video.

Feedback

In context photographs (0)

You can use the form below to contribute a photo of this product.

In context files & documents (0)

Feedback from users, customers & distributors

Please let us know your experience in using this product through comments below.

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In context photographs (0)

In context files & documents (0)

Feedback from users, customers & distributors