CAN WE CONVERT SALT WATER TO FRESH WATER BY USING ONLY SMALL DEVICES?

CAN WE CONVERT SALT WATER TO FRESH WATER BY USING ONLY SMALL DEVICES?

Believe it or not, the answer is yes. And not only yes—we’ve been doing it for decades, long before “climate resilience” became a buzzword. Today, small portable desalination devices can turn seawater into fresh drinking water using nothing more than solar power, manual pumps, or small-scale reverse osmosis systems. They are already used by humanitarian groups, remote communities, and fishermen who need reliable drinking water on the go.

These devices could be lifesavers during emergencies, but here’s the real point—many barangays in the Philippines may need them every single day.

Water scarcity is no longer a distant threat. Even coastal communities surrounded by water are running short—not because they lack seawater, but because their freshwater sources are getting saline. This quiet crisis is called salinization, and it is happening all over the country: in Bulacan, Pampanga, Bataan, Cavite, Cebu, Negros, and parts of Mindanao. Wells that used to provide drinking water now taste salty. Aquifers are being infiltrated by seawater. And as sea levels rise, this problem will only spread.

Without fresh water, communities cannot cook, clean, irrigate, or drink. No economy, no household, no farm can run without it. Water is not just a convenience—it is survival.

That brings us back to the question: can small devices really help?

Absolutely. Some compact desalination technologies now available include:

• QuenchSea – Hand-pump powered, can produce around 3 liters per hour, ideal for emergencies or daily use.
• Rainman Watermaker – Portable reverse osmosis system producing 50–140 liters per hour, used by remote islands and sailors.
• MIT’s solar desalination prototype – Uses sunlight alone, with no filters, no high-pressure pumps, pointing toward future ultra-low-cost solutions.

These devices rely on technologies such as reverse osmosis, solar distillation, electrodialysis, and atmospheric water harvesting. The key is that they don’t require large power plants or massive infrastructure.

And this brings me to one of the most remarkable innovators in this field—a woman the world almost forgot.

Her name was Mária Telkes, a Hungarian-American scientist known during her time as “The Sun Queen.” During World War II, stranded pilots and shipwrecked sailors in the Pacific survived because of a small solar still she invented. This device, which fit inside a life raft, turned seawater into drinkable water using only sunlight. No electricity, no moving parts, no fuel—just evaporation and condensation. Her solar still saved countless lives, and it remained standard equipment for the U.S. Navy and Air Force into the 1960s.

Telkes did not stop there. In 1948, she co-created the Dover Sun House, the world’s first home heated entirely by solar energy. She held over 20 patents and pioneered technologies still used in today’s solar and thermal systems.

Her legacy is simple but profound: the sun can save lives.

So why can’t we apply the same thinking today?

If salinization continues—and it will—the government must know where it is happening, how fast, and what communities are at risk. That should be a priority national mapping program, ideally led by DOST, in coordination with DENR, LGUs, and water districts. Once the hotspots are identified, small desalination devices could be deployed in barangays, evacuation centers, fisherfolk communities, eco-villages, disaster shelters, and off-grid islands.

Of course, portable devices are not the ultimate solution. But they are a practical, immediate, scalable intervention that can prevent suffering while long-term water management systems are built.

The question is not whether we can convert salt water to fresh water with small devices.

We already can.

The real question is: when will we begin using them where they are needed most?

RAMON IKE V. SENERES

www.facebook.com/ike.seneres iseneres@yahoo.com senseneres.blogspot.com 07-23-2026

LET’S PROTECT AND CLEAN OUR EASEMENT ZONES

 LET’S PROTECT AND CLEAN OUR EASEMENT ZONES

There are laws that everyone seems to know about, yet almost nobody bothers to obey — until the floods come, homes disappear under water, and the same officials who ignored these laws suddenly blame “climate change.” One of the most violated laws is the protection of easement zones along our rivers, streams, lakes, and shorelines.

Maybe it’s less of a problem along beaches, where resorts at least pretend to follow regulations. But in riverbanks? In creeks? In small tributaries that nobody pays attention to? There, the violations are massive — and endlessly tolerated.

The law is clear. Article 51 of Presidential Decree 1067 (Water Code of the Philippines) strictly prohibits building any structure within the easement zones: 3 meters in urban areas, 20 meters in agricultural areas, and 40 meters in forest areas. These spaces are meant for public use: for fishing, navigation, safety, and environmental protection. No one is supposed to occupy these zones, much less privatize them with concrete houses, fences, resorts, or factories.

And yet, why do the violations persist?

I don’t want to make a sweeping statement, but many LGUs make it too easy to issue building permits to violators — especially if the applicants are their friends, or if envelopes quietly exchange hands. Some local officials ignore the law, look away, or pretend these easements do not exist. But ignoring the law won’t stop the next flood.

Is it too late to enforce the rules? Too late to correct decades of wrong decisions?

It shouldn’t be. After so many tragedies — Ondoy, Ulysses, Paeng, Agaton, Odette — the reasons to clear our easements are not just obvious; they are urgent. Every blocked waterway becomes a disaster multiplier.

But clearing easements should never be reckless. Families living along these zones must be treated with dignity. They must be properly compensated and relocated, not merely pushed aside. Enforcement cannot be heartless; it must be humane. In the end, this is about balancing the interests of the greater majority with the rights of those who will be displaced.

Why do easement zones matter so much?

Because they are natural buffers. They prevent erosion. They absorb floodwaters. They protect mangroves and fish habitats. They preserve public access to our waterways. They are our last defenses against storm surges and overflowing rivers.

Environmental governance advocate Stefan Steiner put it perfectly:
“Shorelines must be protected from grabbing or settlements. There is a Philippine law protecting the distance in the shorelines, rivers, streams, etc. This law must be known to all Filipino citizens so they can police their own area. The State is the owner and should not allow privatization. It’s free to enjoy and protect but not to destroy. LGUs must protect their area with strict regulations to conserve our environment. The population is explosive and must be regulated or else chaos awaits the next generations. Let us help one another to protect our ecosystem.”

He is right. And yet, public awareness is shockingly low. Ask people what the easement distance is in their barangay, and most will shrug. Many do not even know that riverbanks are public property.

So here is a simple proposal: every LGU should conduct barangay-level easement mapping and cleanup, install permanent markers indicating easement boundaries, and educate residents on why these zones exist. Combine this with community river stewardship programs, mangrove rehabilitation, and strict, non-negotiable enforcement.

Protecting easement zones is not just a legal requirement — it is an act of survival. The more we narrow our rivers, the more our future narrows with them.

Let’s clean them. Let’s restore them. And most of all, let’s protect them — before the next flood reminds us, once again, of the cost of our negligence.

RAMON IKE V. SENERES

www.facebook.com/ike.seneres iseneres@yahoo.com senseneres.blogspot.com 07-22-2026

NEW SOLAR PANEL MAKES DRINKING WATER FROM THE AIR

NEW SOLAR PANEL MAKES DRINKING WATER FROM THE AIR

Yes, you heard that right. A new invention can literally make drinking water from the air. It sounds like magic, but it’s not science fiction anymore. It’s here — and it works even in places where the air feels bone-dry.

These devices, called hydropanels, were developed by researchers at Arizona State University and SOURCE Global. Using nothing but sunlight, they heat and condense water vapor that is always present in the atmosphere. Each panel can produce several liters of clean, safe drinking water per day — without any electricity, without any fuel, and without any connection to a water source.

This raises a very important question for us: How many barangays in the Philippines still do not have access to clean drinking water? Unfortunately, the answer is not fully clear. While PSA and DOH track access to “improved water sources,” there is no single, updated national database listing water-scarce barangays. Many upland indigenous communities, island barangays, and off-grid settlements remain unserved or underserved. Isn’t it time we created a full national inventory?

Traditionally, our water problem has been defined in terms of supply:
— If the water is dirty, filter it.
— If water is salty, desalinate it.
— If water is scarce, build a pipeline or dig a deeper well.

But what if all those options fail? What if a barangay has no river, no spring, no functioning well, no power for desalination, and no budget for expensive infrastructure?

What if the only water source… is the air?

For decades, that idea was dismissed as impossible or impractical. Now technology is proving otherwise.

Hydropanels are already operating in remote villages in India, Africa, and Latin America. They are installed on schools, community centers, and even modest homes. The panels quietly collect moisture during the day, store it inside a mineralized reservoir, and deliver clean drinking water through a simple tap. Imagine that — water without pipes.

If this isn’t a breakthrough for disaster-prone countries like ours, what is?

So now the real question is: What do we do next? We have two choices:

1. Import the technology, or
   
   

2. Develop our own Filipino-made hydropanels.
   
   

For the second option, who should take the lead? This is clearly a job for DOST, perhaps in partnership with UP, MSU-IIT, and private innovators. After all, if we can build solar panels locally, why not hydropanels? Why not challenge our own scientists and engineers to create a version suited to our humid climate, typhoon-proofed, and much cheaper?

If successful, we could deploy hydropanels to:
• Off-grid barangays
• Island communities
• Schools and evacuation centers
• IP ancestral domains
• Coastal villages with saline groundwater
• Farm schools and eco-villages
• Disaster areas after typhoons, earthquakes, or volcanic events

The impact on public health alone would be massive. No more waterborne diseases in remote areas. No more long walks for water. No more dependence on expensive water deliveries.

And let us be clear: climate change will make water scarcity worse. Droughts will intensify. Groundwater will deplete. Saltwater intrusion will worsen. Hydropanels offer a decentralized, climate-smart solution that does not rely on failing or vulnerable infrastructure.

In short, this technology is both a lifesaver and a game-changer.

Perhaps in the near future, every barangay hall and every evacuation center could have hydropanels on their roofs, quietly producing safe drinking water for the community — day after day, powered by nothing but sunlight.

If we can get water from the air, then we no longer have an excuse for allowing any Filipino family to live without access to clean drinking water.

And that, to me, is the real magic.

RAMON IKE V. SENERES

www.facebook.com/ike.seneres iseneres@yahoo.com senseneres.blogspot.com 09088877282/07-21-2026

LET’S PLANT MORE MANGROVES, THE GREAT CARBON SINKS

LET’S PLANT MORE MANGROVES, THE GREAT CARBON SINKS

As the saying goes, you can’t have too much of a good thing. And if there is one thing in the Philippines we should never say “enough” about, it is mangroves. In fact, we should be saying, “the more the merrier.”

We are blessed with one of the longest coastlines in the world and—believe it or not—around 35 species of mangroves, one of the highest diversities on the planet. God has given us a natural advantage. The question is: Are we using it?

I have said it before and I will say it again: mangroves are money. And not just money from fisheries and eco-tourism, but now from the global carbon economy—carbon credits and even Debt-for-Nature Swaps (DfNS). If other countries are earning from their mangroves, why shouldn’t we?

A new study by scientists from UP Tacloban confirmed what many of us have long suspected: Philippine mangroves are world-class carbon sinks. The research found that mangroves in Eastern Visayas store an average of 387 tons of carbon per hectare, equivalent to over 1,400 tons of CO₂. These numbers rival—and in many cases surpass—upland forests.

And here’s the real magic: mangroves bury carbon in waterlogged soils where decomposition is so slow that the carbon stays locked away for centuries. That is why these forests are now considered some of the most efficient long-term carbon vaults on Earth.

But mangroves are not just climate solutions—they are national security assets. We’ve seen it in Leyte and Samar: where mangroves stand, storm surges are weaker. Where mangroves were cut, communities paid the price.

And have we forgotten that mangroves are also food security infrastructure? Where mangroves grow, plankton thrive. Where plankton thrive, fish multiply. Simple chain reaction. Simple logic. Yet we continue to undervalue these ecosystems.

So why aren’t we planting more?
Why aren’t we requiring every coastal LGU to establish and expand mangrove belts?
Why aren’t we treating mangroves as green infrastructure the same way we treat sea walls or dikes?

Some LGUs are already doing it well—Las Piñas–Parañaque, Sasmuan in Pampanga, Olango Island in Cebu, Northern Mindanao, Palawan, Davao Oriental. But these are exceptions. Most municipalities still lack clear mangrove zoning, monitoring, or community stewardship.

If the benefits are so obvious—food, protection, carbon revenue, biodiversity, climate resilience—what else are we waiting for?

We should be rolling out a national directive that:

1. Every coastal LGU must map its mangrove zones,
   
   

2. Restore degraded areas,
   
   

3. Expand existing belts, and
   
   

4. Integrate blue-carbon accounting into their climate plans.
   
   

And if any LGU needs help, I repeat what I’ve said before: I can ship you propagules. I’ve done it before, and I’m happy to keep doing it.

The world is turning to nature-based solutions. Mangroves are at the top of that list. The Philippines, blessed as it is, should be leading this movement—not following it.

Imagine earning from fisheries, earning from carbon credits, and earning from Debt-for-Nature Swaps—while strengthening our defenses against typhoons and protecting future generations.

We don’t need to invent anything. We just need to plant—and protect—what nature already gave us.

Mangroves are not just trees. They are shields. They are nurseries. They are carbon banks.
And most of all, they are a gift we cannot afford to waste.

RAMON IKE V. SENERES

www.facebook.com/ike.seneres iseneres@yahoo.com senseneres.blogspot.com 09088877282/07-20-2026