NSF, UL, WQA certify guidelines set by EPA

In USA, if anyone talks about food and drugs, they know FDA.

And for things related to air and water, they know EPA. After all, if you have a product certified by EPA standards, it's the highest grade of certification. The Seagull IV is EPA certified as a micro-biological water purifier, able to remove 99.99999% of all harmful contaminants in the water, up till the last drop.

What this means is that all beneficial things in the water - dissolved oxygen and minerals, are allowed through making your water sparkling clear and deliciously tasting.

So products that cannot pass this EPA minimum standards, will have to go get certification from other organsiations like NSF, DBKL, MPPJ, LLN, TNB, PLUS etc, so as to confuse the end consumer.

With the EPA certification, FAA has approved only one water purifier for installation on board all passenger aircraft - the Seagull IV water purifier. 300-400 people on board with 8 toilets will be a disaster if the water the aircraft draws from around the world is contaminated in any way.

I have been using my Seagull IV since 1990 - almost 20 happy years. Go check out the raw water demo on youtube. Just search for "Seagull IV water purifier" then see if any other brand can treat river water and you can get the deputy health minister to drink on national tv.

Happy shopping and choose wisely or else it will be frustrating for you to keep looking for a new system to buy every few years, and wasting your time, money and energy.