Gadyen Dlo

Deep Springs International (DSI)

Gadyen Dlo, distributed in Haiti, is a chlorine solution to disinfect water.

Snapshot
Manufacturing & delivery
Performance & use
Research & standards
Feedback

Product description Brand name and product description

Gadyen Dlo, or “Water Guardian” in Haitian Creole, is a liquid chlorine product sold by the bottle to disinfect drinking water. This product is intended to remove/inactivate bacterial, viral, and some parasitic contamination from drinking water.

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

Haiti

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

Deep Springs International (DSI), UNICEF, and Jolivert Safe Water for Families

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

1.25 USD

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

WaterGuard/Sur’Eau (PSI), Aquatabs (Medentech), PUR (P&G), Klorfasil

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)

Rural households in Haiti.

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

Locally produced in Léogâne, Haiti via machine-automated processing.

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

Unknown

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

User can directly contact the manufacturer. The product is sold in Léogâne, Haiti via a network of 150 health workers.

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

The distributer claims that about 2,000,000 people have been impacted.

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

Active Chemical and concentration (%)

Active chemical and concentration (%) of the product (not the concentration of the treated water)

Sodium Hypochlorite, NaOCl (0.7)

Form

Form of the chemical disinfection

Liquid

Dosing method: Batch or flow-through

Does the water flow through a treatment system or does it remain in a container?

Batch

Dosing method: Automatic or manual

Is the dose of the chemical administered automatically or manually?

Manual

Dosing quantity

Manufacturer-specified dosing quantity

1 cap/18.9 L

Contact time (min)

Manufacturer-specified time until water is potable, measured in minutes

Target free disinfectant residual (mg/L)

Remaining level of chemical concentration after manufacturer-specified contact time

Bacteria reduction

Laboratory-evaluated log scale removal rate of bacteria

2 log (under appropriate conditions)

Virus reduction

Laboratory-evaluated log scale removal rate of viruses

2 log (under appropriate conditions)

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

Treatment lifespan (days)

How long can the treated water remain protected and safe to drink?

6 (per 1 pack for 1 average family)

Maximum recommended influent turbidity level (NTU)

Manufacturer-specified maximum level of inlet turbidity (NTU)

Must be low prior to treatment

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

Included is one 8 ounce bottle with cap for dosing and instructions in Haitian Creole with illustrations. Other purchasing option is 1 gallon containers. Almost always, 5 gallon safe-water-storage buckets with spout are distributed for free.

Product schematics Design and assembly illustrations

See CDC training Manual (Module 7) for product schematic and training information

Technical support Technical support provided by

Deep Springs International

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

Single-use product

Lifecycle Disposal and warranty

8 oz bottle treats 700 L of water

Manufacturer specified performance targets Designer / Manufacturer specified targets

The product can treat an average family’s water for 6 weeks.

Vetted performance Findings of manufacturer evaluations or independent testing centers

In conjunction with proper household treatment and storage, tests have shown 80% reduction in water-borne diseases.

Testing organizations Independent lab, academic research centers, etc.

Global Health Institute and Sustainability Initiatives at Emory University and by the Eugene Gangarosa Endowment at the Centers for Disease Control and Prevention (CDC) Foundation.

Safety Potential hazards / risks related to operation of this product

If one family is using a container that is not covered, it will need to treat the water every 24 hours. If the container is covered and has a tap, the family only needs to treat it one time.

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

Filtration method and safe water storage system

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

Harshfield et al., Evaluating the Long-Term Health Impact of Household Chlorination of Drinking Water in Rural Haiti, Proceedings of the Water Environment Federation, 2011, pp. 274-302(29)

Lantagne and Clasen, Use of Household Water Treatment and Safe Storage Methods in Acute Emergency Response: Case Study Results from Nepal, Indonesia, Kenya, and Haiti, Environmental Science & Technology, September 2012, 46(20):11352-60

Garnett, Erin. Gadyen Dlo “Water Guardian”: A Qualitative Study of the Influence of Cholera on Household Water Treatment Practices in Haiti, Thesis, Emory University (2013)

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

NSF / ANSI Standard 60: Drinking Water Treatment Chemicals: Gadyen Dlo is not specificially listed as complying, but dozens other companies selling sodium hypochlorite products for drinking water treatment are approved. This certifies that chemicals are safe at the maximum dose and that any impurities are below the maximum allowable limit.

US Environmental Protection Agency (EPA) Registration: Gadyen Dlo is not registered with the EPA but sodium hypochlorite has been since 1957, and the EPA issued a registration standard in 1986 saying that sodium hypochlorite products (with 5.25% – 12.5% chlorine) do not need individual registration review.

World Health Organization (WHO) Guidelines for Drinking Water Quality list liquid NaOCl with concentrations between 0.5% and 1% as a point-of-use water treatment method.

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

Lab and field evaluations

Other information

Gadyen Dlo report by Pepahaiti

Implementation Case Study: Gadyen Dlo Chlorine and Aquatabs in Haiti by CAWST

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)

Haiti

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

Deep Springs International (DSI), UNICEF, and Jolivert Safe Water for Families

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

1.25 USD

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

WaterGuard/Sur’Eau (PSI), Aquatabs (Medentech), PUR (P&G), Klorfasil

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)

Rural households in Haiti.

Manufacturing & delivery

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

Locally produced in Léogâne, Haiti via machine-automated processing.

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

Unknown

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

User can directly contact the manufacturer. The product is sold in Léogâne, Haiti via a network of 150 health workers.

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

The distributer claims that about 2,000,000 people have been impacted.

Performance & use

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

Active Chemical and concentration (%)

Active chemical and concentration (%) of the product (not the concentration of the treated water)

Sodium Hypochlorite, NaOCl (0.7)

Form

Form of the chemical disinfection

Liquid

Dosing method: Batch or flow-through

Does the water flow through a treatment system or does it remain in a container?

Batch

Dosing method: Automatic or manual

Is the dose of the chemical administered automatically or manually?

Manual

Dosing quantity

Manufacturer-specified dosing quantity

1 cap/18.9 L

Contact time (min)

Manufacturer-specified time until water is potable, measured in minutes

Target free disinfectant residual (mg/L)

Remaining level of chemical concentration after manufacturer-specified contact time

Bacteria reduction

Laboratory-evaluated log scale removal rate of bacteria

2 log (under appropriate conditions)

Virus reduction

Laboratory-evaluated log scale removal rate of viruses

2 log (under appropriate conditions)

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

Treatment lifespan (days)

How long can the treated water remain protected and safe to drink?

6 (per 1 pack for 1 average family)

Maximum recommended influent turbidity level (NTU)

Manufacturer-specified maximum level of inlet turbidity (NTU)

Must be low prior to treatment

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

Product schematics Design and assembly illustrations

See CDC training Manual (Module 7) for product schematic and training information

Technical support Technical support provided by

Deep Springs International

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

Single-use product

Lifecycle Disposal and warranty

8 oz bottle treats 700 L of water

Manufacturer specified performance targets Designer / Manufacturer specified targets

The product can treat an average family’s water for 6 weeks.

Vetted performance Findings of manufacturer evaluations or independent testing centers

In conjunction with proper household treatment and storage, tests have shown 80% reduction in water-borne diseases.

Testing organizations Independent lab, academic research centers, etc.

Global Health Institute and Sustainability Initiatives at Emory University and by the Eugene Gangarosa Endowment at the Centers for Disease Control and Prevention (CDC) Foundation.

Safety Potential hazards / risks related to operation of this product

If one family is using a container that is not covered, it will need to treat the water every 24 hours. If the container is covered and has a tap, the family only needs to treat it one time.

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

Filtration method and safe water storage system

Research & standards

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

Harshfield et al., Evaluating the Long-Term Health Impact of Household Chlorination of Drinking Water in Rural Haiti, Proceedings of the Water Environment Federation, 2011, pp. 274-302(29)

Garnett, Erin. Gadyen Dlo “Water Guardian”: A Qualitative Study of the Influence of Cholera on Household Water Treatment Practices in Haiti, Thesis, Emory University (2013)

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

World Health Organization (WHO) Guidelines for Drinking Water Quality list liquid NaOCl with concentrations between 0.5% and 1% as a point-of-use water treatment method.

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

Lab and field evaluations

Other information

Gadyen Dlo report by Pepahaiti

Implementation Case Study: Gadyen Dlo Chlorine and Aquatabs in Haiti by CAWST

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