Rainfresh MP4U Gravity Filter

Target SDGs

Market Suggested Retail Price

$135.00

Target Users (Target Impact Group)

Household, NGOs

Distributors / Implementing Organizations

Envirogard Products Ltd. manufactures the ceramic filter cartridges, the buckets, spigots, and other components are manufactured separately and shipped together or obtained locally and assembled on-site.

Competitive Landscape

Direct competitors include Purifaaya, Caminos de Agua Ceramic filters, Tulip Table Top Filter, and Nazava Water Filter.

Manufacturing/Building Method

Envirogard Products Ltd. manufactures the ceramic filter cartridges, the buckets, spigots, and other components are manufactured separately and shipped together or obtained locally and assembled on-site.

Intellectural Property Type

Trademark

User Provision Model

Users can obtain the product from Global Medic when it is distributed during natural disasters, displacements, and in refugee or internally-displaced peoples camps. It is also available for sale online from Envirogard for $135.

Distributions to Date Status

Partner NGO Global Medic has distributed more than 25,800 RainFresh Gravity Water Filters in Lebanon, Haiti, Somalia, the Philippines, Nepal, Vanuatu, Sudan, Pakistan, and Cambodia.

Design Specifications

The filter setup consists of four Envirogard 7300G silver-impregnated ceramic cartridges in an upper 25L bucket over a sealed bottom 25L bucket with a spigot for dispensing water. It comes with a filter gauge for measuring the end-of-life of the ceramic candle, cleaning mesh, and the necessary hardware and pictoral instruction manual for installation.

Product Schematics

Technical Support

Available during distributions from the partner NGO or through contacting the manufacturer.

Replacement Components

The four Envirogard 7300G silver-impregnated ceramic filter cartridges must be replaced after filtering 15,000 L or 12 months. The upgraded 7500G filter cartridges with an activated carbon core for taste and odor reduction are available for sale in Canadian hardware stores or online in packs of four for $90 but may be available for cheaper from the distributing NGO.

Lifecycle

The four Envirogard 7300G silver-impregnated ceramic filter cartridges must be replaced after filtering 15,000 L or 12 months. The filter gauge is used after cleanings to measure wear on the ceramic filter and indicates end-of-life.

Manufacturer Specified Performance Parameters

Rainfresh P2S siphon water filter units are designed to be affordable, mass-produced, easy to assemble and use, and last a family of five drinking 3 L/day each a full year.

Vetted Performance Status

The four Envirogard 7300G silver-impregnated ceramic filter cartridges must be replaced after filtering 15,000 L or 12 months. The filter gauge is used after cleanings to measure wear on the ceramic filter and indicates end-of-life.

Safety

No known safety risks if properly used and bottom bucket remains properly sealed against recontamination.

Complementary Technical Systems

None

Academic Research and References

Compliance with regulations

Rainfresh ceramic filter cartridges are tested and certified by CSA International to NSF53 for reduction of protozoa.

Evaluation methods

Laboratory testing with purified water seeded with microbiological contamination.

Other Information

None