Updated on February 4, 2024


Created on September 1, 2021

Naïade mobile solar water purifier

Naïade is a solar-powered UV water disinfection and purification system

Developed By
  1. nedap
Tested By
  • Ahmedabad Textile Industry’s Research Association (ATIRA)
  • Chinese Center for Disease Control and Prevention (China CDC)
  • Ghana Standards Authority
  • kiwa
  • Ministre de l’energie, des mines et de l’eau (Mali)
  • Rwanda Standards Board (RSB)
  • UNESCO Centre for Membrane Science and Technology
  • Water Quality Laboratory Gaborone, Botswana
  • Water Quality Labs (Tanzania)
  • Water Research Institute, Ghana
Content Partners


Product Description

Naïade is a mobile stand alone water purifier built by Nedap. The system uses solar power to operate and disinfects water using ultraviolet (UV) technology, eliminating need for use of any chemicals. The unit can purify 3000 liters a day with a >99% kill rate of bacteria and viruses.

Target SDGs

SDG 6: Clean Water and Sanitation

SDG 7: Affordable and Clean Energy

Market Suggested Retail Price


Market Suggested Retail Price (Secondary Currency)


Target Users (Target Impact Group)


Distributors / Implementing Organizations

The product can be purchased through local resellers located in Angola, Burkina Faso, Congo, Co?te d'Ivoire, Ghana, Kenya, Liberia, Madagascar, Mali, Morocco, Nigeria, Rwanda, South Africa, Togo, Brazil, Columbia, Ecuador, Haiti, Mexico, Peru, Suriname, China, Bangladesh, India, Indonesia, Japan, Sri Lanka, Vietnam, The Netherlands, Romania, Spain, Turkey, Afghanistan, Israel, Pakistan, USA, and Australia.

Manufacturing/Building Method

This product is produced in the Netherlands.

Intellectural Property Type

Select Type

User Provision Model

Nedap distributes to local resellers around the world from their headquarters in the Netherlands. End users can acquire the product from their local reseller.

Distributions to Date Status

As of 2021, approximately 1000 units have been distributed Interview with manufacturer

Deactivation mechanism

Ultra-Violet (UV)

Energy source


Manufacturer-specified water treatment rate (L/hr)

300 L/hr

Bacteria reduction

3 log (E. coli)

Virus reduction


Protozoa reduction


Heavy metals and/or arsenic reduction


Maximum recommended influent turbidity level (NTU)


Effluent turbidity levels (NTU)


Safe water storage capacity (L)

100 L

Design Specifications

A Naïade unit consists of a solar panel, ultraviolet (UV) light, plastic body, a battery and several filters. The solar panel has a capacity of 75 W, and the UV light inside has a capacity of 20 W. The plastic body has a water storage capacity of 100 L, and the outside of the body has pictograms to depict how to use the unit. The water is cleaned through the use of mechanical filters and UV light. The UV light inactivates bacteria, viruses and worm eggs, while the mechanical filters clean impurities, removing particles both large and microscopic to make the water safe to drink.

Product Schematics

Technical Support

Maintenance can be carried out by users and local technicians.

Replacement Components

Replacement components include the filters, UV lamps, and batteries.


10 years

Manufacturer Specified Performance Parameters

The product is designed to provide safe disinfection of water using smart UV disinfection technology, while being simple to install and maintain. The UV disinfection system is designed to have a >99% kill rate of bacteria, protozoa and viruses.

Vetted Performance Status

Testing performed by UNESCO-IHE determined 3 log removal of E.coli.


Potential safety hazards arise from the use of UV lamps, as UV light damages the eyes. Safety guidelines for proper installation and maintenance should be followed.

Complementary Technical Systems

Batteries can be added to the unit to store energy for operation at night.

Academic Research and References

Voigt, E., Jaeger, H., and Knorr, D., 2013, Comparison of Systems Available on the Market. Securing Safe Water Supplies, Securing Safe Water Supplies, Academic Press, pp. 41-74.

United Nations World Water Assessment Programme, 2006, Water, A Shared Responsibility, The United Nations World Water Development Report 2.

This paper presents general information on UV disinfection for remote areas using filtration units:

Chabi, K., Zeng, J., Guo, L., Li, X., Ye, C., and Yu, X., 2020, Small-scale drinking water treatment unit of filtration and UV disinfection for remote area. Water Supply. 20(6): 2106–2118.

“Contact,” NedapUV, 16-Feb-2023. https://www.nedap-uv.com/contact-us/ 

Kit.nl. https://www.kit.nl/wp-content/uploads/2018/08/1678_Smart-Disinfection_p01_72_LR.pdf

“UV Waterworks Product Detail,” Greenstar.org. http://www.greenstar.org/UVWaterworks.htm 

“Goal 6,” Sdgs.un.org. https://sdgs.un.org/goals/goal6 

O. Kruidhof, “Naïade,” NedapUV, 21-Feb-2022. https://www.nedap-uv.com/uv-insights/case-studies/naiade/

Compliance with regulations


Evaluation methods

This product has been evaluated for E.coli removal by UNESCO-IHE.

Other Information

International Ultraviolet Association (IUVA), 2016, IUVA News, Vol 18, Issue 4.

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