Take everything out. Put four minerals back.
Calcium, magnesium, potassium and sodium, at an alkaline pH. What the systems remove, what they restore, and how the result is checked.
The treatment sequence.
Four filter cartridges, plus UV protection. The pre-filter is replaced every four to six months, the other cartridges every twelve months.
Sediment and pre-filter
Reduces sand, rust, dirt and chlorine taste. Protects the stages downstream.
Reverse osmosis
Filtration at 0.0001 micron. Removes heavy metals and dissolved contaminants.
Post-carbon
Final polishing stage. Improves taste and smell.
Mineral filter
Restores calcium, magnesium, potassium and sodium. Powered by Biocera.
Source water in Thailand.
Mains water is not intended to be drunk at the tap. Depending on province and season it carries chlorine and its by-products, sediment, heavy metals, and bacteriological risk wherever the network is old or intermittent. Island and coastal networks add salinity and pressure loss at peak demand.
Bottled water moves the problem rather than solving it. Quality depends on the bottler and on how the bottle was stored, and every litre delivered joins a waste stream the country already struggles to process.
For the detail by province, read our guide, is tap water safe to drink in Koh Samui and Thailand, and on the blog, can you drink tap water in Thailand and drinking tap water in Bangkok. Where a site has a water line, the Pure range treats it by reverse osmosis.
Two starting points.
Air
Air systems do not treat mains water. They pull humid air through a filter, condense it, protect it with filtration and UV, then remineralise it. On the Air Stand Pro the sequence runs to seven stages: air filter, sediment, pre-carbon, reverse osmosis, post-carbon, LED UV and a UV lamp in the tank.
Explore the Air range
Pure
Pure systems connect to your existing water line: pre-filtration, reverse osmosis rated at 75 GPD, roughly 12 litres an hour, post-carbon polishing, Biocera mineral filter, then hot and cold dispensing.
Explore the Pure range
How quality is verified.
Components are certified for material safety, the mineral stage uses Biocera technology from Korea, and the reverse osmosis membrane is rated at 0.0001 micron.
Water produced on site can be tested by an independent ISO 17025 accredited laboratory once a year, as part of our business service plan. TDS and pH are checked during routine maintenance.
Independent lab report (ISO 17025), available on request.
Water from Minairal systems is analysed by an independent laboratory accredited to ISO 17025. Ask for the full report and we will send it to you.
Mineral water, or water with minerals added?
Two questions we are asked in Thailand, answered plainly.
Is Minairal water mineral water?
No. In Thailand, natural mineral water (น้ำแร่ธรรมชาติ) is a regulated category: water drawn from an underground source with its own natural mineral content, bottled near the source. Minairal water is drinking water filtered on site and then remineralised with calcium, magnesium, potassium and sodium, so it is drinking water with minerals added (น้ำดื่มเติมแร่ธาตุ). We offer it as the bottle-free alternative to bottled mineral water, not as mineral water.
What is mineral water called in Thai, and how is it different from water with minerals added?
Mineral water in Thai is น้ำแร่ (náam râe); on a label the regulated name is น้ำแร่ธรรมชาติ, natural mineral water. Its minerals come from the underground source, and the water may only receive limited treatment before bottling. Drinking water with minerals added, น้ำดื่มเติมแร่ธาตุ, starts from filtered water and has its minerals added afterwards. The Air and Pure systems make the second kind, on site, hot and cold, without bottles.
From the blog.
Is water from air safe to drink?
Water from an atmospheric water generator is safe to drink when filtered, UV-treated and remineralised. The seven stages, pH 8.5+ and the ISO 17025 test.
Read the article
RO water filter price in Thailand: what drives the cost
The price of an RO water filter in Thailand depends on the machine, the installation, the filter changes and whether the water is remineralised. How to compare.
Read the article
RO water: pros, cons and why remineralisation matters
RO water explained: what reverse osmosis removes, its real pros and cons in Thailand, why it strips minerals and how remineralisation puts them back.
Read the article
Want the figures for your own water?
Request a site assessment. Once the system runs, the laboratory report for your site is available on request.