Fresh water is scarce in many parts of the world and must be obtained at great expense. Communities near the ocean can desalinate sea water.

Converting seawater into safe drinking water takes an enormous amount of energy, which makes it a costly and polluting process.

The CrazyCap Bottle is a completely portable water purifier that screws on to most reusable cola-style water bottles.

Robots are cleaning our oceans, harbours and rivers. No matter how much they clean, it’s only politicians who can make a real change.

As much as a third of the world's population does not have access to clean drinking water, according to some estimates.

New membrane could also be used to remove salt from wastewater to provide a new source of fresh water.

Engineers have designed a relatively low-cost, energy-efficient approach to treating water contaminated with heavy metals.

To create a sustainable system of wastewater treatment, the focus has shifted to eco-friendly and cost-effective technologies.

The world's largest floating river bank in French inner-city canal which has transformed plant and insect life in waterways around the world

Engineers at the University of Illinois have created a solar-powered electrochemical reaction that not only uses wastewater to make ammonia

Widespread use of the new technology could increase nitrogen content and lower global use of fertilizers for wheat crops.

In addition to providing vitamin D, helping flowers grow and creating the perfect excuse to head to the beach, sunlight also breaks down

Turning cities’ wastewater into usable freshwater is an environmental win. Engineering the system to be more energy efficient is better

New system developed by MIT could reduce water needs at power plants potentially helping alleviate water shortages in those areas.

Ural Federal University (UrFU) power engineers have developed a new desalination technology. It will significantly reduce the cost.