Solving the Water-Energy Crisis

Implementing new technologies to lower the energy intensity of desalination, monitor water use, and create new ways of generating energy at wastewater treatment facilities and desalination plants.

Negal Ltd

environmentally sound technologies

Home Water Purification Unit

TECHNO WATER - Potable water with unique Japanese technology


Bay City Techno Co. Ltd has developed a revolutionary system in processing contaminated sea, river, lake, pond water.


- fresh mineral water without using chemicals

- processing unit or units can be delivered in containers or on trucks as a mobile unit

- if in remote areas the electricity power is provided through solar panels and wind turbines

- low energy consumption (rotary piston pump & RO membrane)

- obtained drinking water can be bottled and put on the market as mineral water


Japanese process system does not use chemicals and is the only process who can treat contaminated/polluted water into mineral level quality water.



WPU installed in 20 feet containerGood news for people living in areas with a problematic water supply. Truck or container type water purification unit  can produce clean, safe water from sea, river or lake water in areas, which lack water supply infrastructure, areas, which suffer from a chronic water shortage due to drought or other reasons and disaster hit, and other areas where a water shortage is being experienced.







WPU 40 feet container type

Buildings: a unit installed in a building will clean up all the water pipes and provide fresh water (used in hospitals, hotels or any other kind of buildings.

Fixed units can be combined on a site and fresh water can be stored in tanks for a network distribution. Bay City Techno Co. Ltd has a worldwide patent on the whole process.





diagram wpu






Seawater conversion units. (Video 1)



Japanese desalination technology (Video 2)



Read more about the proposed water purification processes. here


Oil spill clean-up

oil spill

Water purification unit for possible use in Gulf Coast spill.




Water purification is a process of removing undesirable chemicals, materials, and biological contaminants from raw water. The goal is to produce water fit for a specific purpose. Most water is purified for human consumption (Drinking water) but water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacology, chemical and industrial applications.

WHO report

According to a 2007 World Health Organization report, 1.1 billion people lack access to an improved drinking water supply, 88% of the 4 billion annual cases of diarrheal disease are attributed to unsafe water and inadequate sanitation and hygiene; and 1.8 million people die from diarrheal diseases each year. The WHO estimates that 94% of these diarrheal cases are preventable through modifications to the environment, including access to safe water. Reducing deaths from waterborne diseases is a major public health goal in developing countries.


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