The SolarPure UF is a compact semi-industrial water treatment and bottling plant. It can treat up to 20,000 Liters per 12-hour day using 400 W in solar power mode and filter water with a minimum input of 50W. The core water treatment technologies are Ultrafiltration and Activated Carbon. Interview with representative
Distributors / Implementing Organizations
Distributed by Healing Waters. Implemented in Uganda, Rwanda, and Kenya by Jibu. Interview with representative
Batch assembled, up to 12 week lead time for large orders. Interview with representative
Intellectural Property Type
User Provision Model
Direct purchase from manufacturer or through a partner NGO called Jibu.
Distributions to Date Status
Healing Waters has implemented over 200 water projects around the world. This particular design is newer, with 52 units produced to date. Interview with representative
Description of the combined methods
Pre-filtration, Ultrafiltration, Activated Carbon, Polishing Filter, Chloramine injection
Manufacturer-specified water treatment rate (L/hr)
300 to 1800 L/hr, depending on available power
Heavy metals and/or arsenic reduction
Maximum recommended influent turbidity level (NTU)
Effluent turbidity levels (NTU)
Safe water storage capacity (L)
Manufacturer-specified lifetime volume (L)
The SolarPure UF uses a 5-step water treatment process which is low-waste, with typically >90% net water recovery. It includes:
- Pre-filtration: 105-micron stainless steel screen.
- Ultrafiltration: 0.02-micon pores for removal of bacteria, viruses, and other waterborne diseases.
- Activated Carbon: 24kg of coconut-shell carbon contains 28,000,000 m2 of surface area. Effective at reducing taste and odor issues.
- Polishing Filter: 0.35-micron cartridge filter.
- Chloramine (at 1.0 ppm) is injected into the final water as a preservative.
The Healing Waters Engineering team provides support. Interview with representative
Inventory of replacement components are stocked in several countries around the world and growing. Interview with representative
The manufacturers offer a 1 year warrenty. Typical life cycle of 10-20 years, but could be much longer with proper maintenance. Equipment frame and most plumbing/valves are stainless steel. Regarding disposal, filtration media is non-hazardous, stainless steel is a recyclable commodity, and electronic components should be properly recycled. Interview with representative
Manufacturer Specified Performance Parameters
Provides ultrafiltration with removal of bacteria, viruses, and other waterborne diseases. The SolarPure UF can reach a production rate of up to 30 liters per minute at 400 W, and can filter water with as little as 50 W. All built-in functionality is fully functional at 200 W. Interview with representative
Vetted Performance Status
During design phase, 3rd-party performance testing performed by Dr. Nathan Hancock, Colorado School of Mines. Interview with representative
The filtration media is non-hazardous.Interview with representative
Complementary Technical Systems
For surface water, sand pre-filtration is recommended. Interview with representative
Academic Research and References
Compliance with regulations
Most components are produced in ISO 9001 facilities. Ultrafiltration Membrane is produced in an ISO 9001 facility and is NSF 61 listed. Interview with representative