Solar Desalination Supports United Nations Sustainability Goal 6: Clean Water & Sanitation for All

The Sustainable Development Goals (SDGs) are the world’s shared to-do list. Goal 6 sounds simple enough: clean water and sanitation for all. But the numbers are stark – two-thirds of the global population face serious water scarcity at least one month each year. Another 10% live in countries under constant high stress.

New Zealand may look water-rich, but the picture isn’t always so rosy. Extended dry spells, rising demand, and stretched infrastructure have shown just how fragile supplies can be. NIWA’s 2023 report pointed out that places like Hawke’s Bay and Canterbury are more drought-prone than ever.

Across the Pacific Islands, the challenge is even sharper. Saltwater intrusion, limited land, and climate-driven sea level rise leave entire nations struggling to secure safe water. For many, resilience isn’t a long-term goal – it’s survival right now.

The truth is, the urgency of Goal 6 isn’t up for debate anymore. What we need are solutions that hold up when the usual systems break down. That’s where EWM solar desalination comes in – providing fresh water where it’s needed most, without leaning on the grid or fossil fuels.

How Solar Desalination Builds a Water-Secure Future

Solar desalination is straightforward in concept: it takes seawater and sunlight and turns them into drinking water. EWM’s systems are decentralised and run off-grid, so communities don’t need to rely on expensive fuel or patchy infrastructure.

It’s a practical way to tackle water scarcity in islands and coastal regions. The systems are tough enough for remote locations, yet flexible enough to scale up as needs grow. That makes them just as valuable for a small Pacific village as for a coastal town in New Zealand.

Their contribution to the sixth SDG goal – and to improving lives in vulnerable places – is clear. Which explains why governments, NGOs, and private organisations are already turning to them.

Providing Safe and Affordable Water Access

Target 6.1: Achieve universal and equitable access to safe and affordable drinking water for all

Traditional water sources aren’t as reliable as they once were. Rainwater depends on weather that’s becoming harder to predict. Groundwater is often brackish or polluted. Trucking water over long distances costs too much, takes too long, and isn’t sustainable.

EWM systems solve these problems by:

• Producing safe drinking water from seawater using only solar or wind power.
• Offering a steady supply – the sun and the sea don’t run out.
• Operating off-grid, keeping even the most remote settlements water-secure.
• Avoiding diesel and electricity costs, so water stays affordable.

For families, this means having safe water every day without waiting for a truck or digging another well. For governments and aid groups, it means hitting water access targets in a realistic, sustainable way. That’s just as relevant in coastal New Zealand towns as it is in Pacific Island communities, where traditional supply options are costly and fragile.

Delivering Cleaner, Safer Water

Target 6.3: Improve water quality by reducing pollution, eliminating dumping and minimising release of hazardous chemicals and materials, halving the proportion of untreated wastewater and substantially increasing recycling and safe reuse globally.

It’s not only about having enough water – it’s about whether that water is clean. Right now, 2.2 billion people still lack safely managed drinking water.

EWM systems help by:

• Running without harmful chemicals or additives.
• Operating with zero emissions, powered entirely by the sun.
• Minimising and carefully managing brine discharge to protect marine life.

The point is simple: EWM desalination doesn’t create new problems while fixing old ones. It’s clean from start to finish.

Using Water Resources Wisely

Target 6.4: Substantially increase water-use efficiency across all sectors and ensure sustainable withdrawals and supply of freshwater to address water scarcity and substantially reduce the number of people suffering from water scarcity.

Conventional desalination can be heavy on energy and hard on the environment. That’s a deal-breaker in places where resources are already stretched.

EWM’s solar desalination takes a different path. It’s designed for efficiency and minimal impact, which makes it a better fit for communities under pressure.

Here’s how:

• Energy recovery tech cuts power use by up to 70% compared with older systems.
• Systems are climate-resilient, drought-resistant, and produce very little waste.
• The process is chemical-free, so there’s no hidden environmental cost.

In short, these systems don’t pile on new problems. They provide water in the smartest way possible.