Free installation + 2-year warranty on every purifier · Installation and service across Mangaluru, Bengaluru and nearby towns · Book a lab test
Iron removal for borewell water
Yellow borewell water is almost always dissolved iron. For most homes a Puryn iron remover takes it out with a bed of MnO2-coated catalytic media: no salt, no cartridges. Above about 2 mg/L of iron we add air injection. If the water is acidic we correct the pH first, and for apartments, factories and RO plants we oxidise and filter the iron ahead of the plant. Your lab report tells us which of these you need.
- Lab report before we recommend anything
- Manual: 2-year warranty
- Automatic: 5-year unconditional warranty
- Installed by our own technicians
- No salt, no cartridges to buy
- Homes, apartments, factories and RO plants
Size by your water and your pump, not your house. Iron level and pH decide the system. Your borewell pump also has to push about 40 litres a minute for the backwash, so we measure the flow during the test.
What are the signs of iron in borewell water?
Six signs: water that turns yellow after it stands, orange stains, a rotten-egg smell, black specks, blue-green stains, and water that leaves a filter clear but turns hazy in the tank. Each one points to a different fix.
Yellow or orange water
Clear from the tap, yellow by evening. Buckets fill with orange sediment.
Orange stains
On tiles, sinks, buckets and white clothes, and they come back after cleaning.
Rotten-egg smell
Strongest from hot water and stored water. Often comes with iron.
Black specks or dark stains
Tiny black bits in the water, dark marks on basins. Usually manganese.
Blue-green stains, sour taste
Turquoise marks under taps, pinhole leaks, corroded fittings.
Clear after the filter, hazy in the tank
Your existing filter outlet looks fine, but the sump or overhead tank turns cloudy.
We always test the water first
At your borewell we check iron, pH, hardness, TDS and turbidity, plus pump pressure and flow. Both lab reports are included in your price. When the numbers decide a bigger job, we send a sample to a testing lab in Surathkal and explain the report line by line.
How much iron is too much?
IS 10500:2012 sets the acceptable limit for iron in drinking water at 0.3 mg/L, with no relaxation. That is also roughly where orange stains and a metallic taste begin. Some local lab reports print 1.0 mg/L as the limit; we go by 0.3. Packaged drinking water must stay under 0.1 mg/L under IS 14543. Some Mangaluru wells run far above both.
Sources: Bureau of Indian Standards IS 10500:2012 and IS 14543; groundwater survey of 180 samples across 60 Mangaluru City Corporation wards, Nitte University Journal of Health Science, 2023.
Match your water to the right system
Most iron enquiries we get fit one of these six patterns. Find yours to see which system to start with. Your lab report confirms it.
Iron
0.3 to 2 mg/LYellow water, orange stains
Normal pH
pH 6.5 to 8.5No blue-green stains
High iron
Above 2 mg/LWater goes orange quickly, heavy sediment
Strong smell
Hydrogen sulphideRotten-egg smell from stored water
Iron
0.3+ mg/LOrange stains
Acidic water
pH below 6.5Blue-green stains, corroded fittings
Iron
0.3+ mg/LOrange stains
Hard water
Hardness 200+ mg/LWhite scale on taps and geysers
Iron
Any levelIron in the feed water
RO plant or bottling
IS 14543: 0.1 mg/LMembranes foul, product water fails
Existing iron filter
Iron is backYellow water after backwash
Nothing else in the test
For drinking water, an iron remover is not enough on its own. Add a Puryn purifier (e1 to e6) on the kitchen line.
Which iron remover do I need?
All three run on the same 13 × 54 inch FRP vessel and catalytic media, rated at 1,000 litres an hour. The difference is how the bed gets cleaned and whether air goes in first. Our technician picks the model from your iron level and how much attention the unit will get.
| Manual | MOST CHOSENAutomatic | Automatic with air injection | |
|---|---|---|---|
| Best for | Homes where someone can turn the handle | Busy homes, rented houses, homes left empty | Iron above about 2 mg/L or a strong smell |
| Cleaning | Turn one handle: backwash, rinse, filter | Digital valve backwashes on schedule | Digital valve backwashes on schedule |
| Air injection | No | No | Venturi injector with non-return valve, air release valve |
| Pressure vessel | FRP 13 × 54 inch | FRP 13 × 54 inch | FRP 13 × 54 inch |
| Rated flow | 1,000 LPH | 1,000 LPH (1,200 maximum) | 1,000 LPH |
| Inlet / outlet | 1.5 inch (40 NB) | 1 inch (25 NB) | 1 inch (25 NB) |
| Power | Not needed | 230 V socket near the unit | 230 V socket near the unit |
| Backwash flow from your pump | About 40 L a minute | About 40 L a minute | About 40 L a minute |
| Warranty | 2 years | 5 years, unconditional | 5 years, unconditional |
iRated flow
1,000 litres an hour is enough for a house with several taps running at once. It is the flow the media is sized for, not a target your pump must hit.
iBackwash flow
During the wash your pump has to lift the bed and flush the iron out. A 13 × 54 vessel needs about 2.4 m³/h, roughly 40 litres a minute. A weaker pump leaves iron in the bed, which is why we measure it.
iAir injection
A venturi draws air into the line so dissolved iron starts turning into particles before it reaches the tank. We add it where iron runs above about 2 mg/L.
Installed where the water enters the house
The iron remover sits between the borewell pump and the overhead tank, so every tap in the house gets treated water. Our technicians fit it with bypass piping, so water keeps flowing while the unit is serviced.
What to have ready
- A drain point near the unitBackwash water carries the trapped iron out. A floor drain or open drain works.
- A 230 V socket (automatic only)Within reach of the valve, not on a switched circuit.
- Floor space on the pump lineAbout one square metre near where the borewell line rises to the tank.
- Your water test, if you have oneAlready have a lab report? Send it. If not, our lab test covers it.
What our technicians do
- Measure the pump flow and pressure, and test iron and pH at the borewell.
- Fit the vessel on the line from the pump to the overhead tank, with a bypass.
- Load the media in layers: graded gravel at the bottom, catalytic media above, with space left for the bed to lift.
- Run a long first backwash and rinse to clear the fine dust from new media.
- Set the backwash schedule for your iron level (automatic), or show you the handle (manual).
- Test the outlet water in front of you and register the warranty.
Want to see how it goes in? WhatsApp us a photo of your pump line and we will mark where the unit goes.
Iron removal for businesses
On bigger sites the iron problem shows up in tanks, membranes and product water. The fix is the same chemistry at a larger scale: turn the dissolved iron into particles, give it time, then filter it out.
Central iron removal
An automatic iron remover on the borewell line to the sump or overhead tank, so every flat gets clear water and nobody has to remember to backwash.
Talk to us about a building →Pre-treatment ahead of the RO
Iron fouls RO membranes, and packaged drinking water must stay under 0.1 mg/L. We dose chlorine or inject air, hold the water for contact time, filter it through media, then carbon before the RO.
Industrial RO plants →Process and utility water
Iron stains products, blocks nozzles and scales heat exchangers. We size the vessels and backwash to your flow, and can replace the media in filters you already have.
Filter media replacement →Water clear after the filter, but hazy in the sump?
That is dissolved iron passing straight through and turning to rust once it meets air in the tank. A bigger filter will not fix it. The iron has to be oxidised first, with chlorine dosing or air plus a contact vessel, and filtered after that. We diagnosed exactly this at a packaged drinking water plant in Dakshina Kannada in October 2026.
Send us your water test
Have a lab report already? WhatsApp a photo of it. A person from our water team reads it and tells you the system, the order of the stages and what it will need at your site.
Send your report
A photo or PDF of the lab report, or just tell us what you see: colour, stains, smell.
Our water team reads it
A real person, not a bot. We check iron, pH, hardness and turbidity together.
Get a clear answer
Which system, in what order, and a lab test of your water to confirm it before any quote.
Book a lab test.
We test iron, pH, hardness and turbidity, measure your pump flow, and then recommend a system. Both lab reports are included in your price.
Frequently asked questions
Can you remove iron from borewell water?
Yes. A catalytic iron remover installed on the line from the borewell pump to the overhead tank takes out dissolved iron and manganese and reduces the rotten-egg smell, for every tap in the house. High iron gets air injection ahead of it, and acidic water gets pH correction first.
How much iron can a Puryn iron remover handle?
For most homes the iron remover alone is enough. Where iron is above about 2 mg/L we add air injection ahead of the tank. Very high iron, or iron with acidic water, gets an oxidation or pH stage first. We size it from your test, not from a chart.
Why is my water clear after the filter but yellow in the tank?
The iron is still dissolved when it passes the filter, so the filter cannot catch it. It turns to rust once it meets air in the tank. The fix is to oxidise the iron before the filter, with air injection or chlorine dosing, and give it time to react.
Will an iron remover make my water safe to drink?
No. It treats water for bathing, washing and cleaning. For drinking water, add a Puryn purifier (e1 to e6) on the kitchen line.
Do I need salt or chemicals?
Not for most homes. The iron remover uses catalytic media, with nothing to top up. Acidic water needs soda ash for pH correction, and some business plants use chlorine dosing ahead of the filter.
How often does it need to be washed?
It depends on your iron level and how much water you use. Our technician sets the schedule after the test. The automatic model does it on its own; on the manual model you turn one handle.
Is an iron remover the same as a water softener?
No. An iron remover deals with iron, manganese and smell. A softener deals with hardness, the white scale on taps and geysers. Many borewells need both, with the iron remover first.
What warranty do I get?
The manual iron remover carries a 2-year warranty. The automatic iron remover, with or without air injection, carries a 5-year unconditional warranty. Register your unit at puryn.in/warranty after installation.
Where do you install?
Across Mangaluru, Udupi and Dakshina Kannada from our Surathkal store, and in Bengaluru from our head office at Sunkadakatte, Magadi Road.
How does the lab test work?
You get two lab reports: a pre-treatment report before we recommend anything and a post-treatment report after installation. Both, worth ₹2,000, are included in the price of your system. You pay ₹1,000 when we take the first sample, and it is adjusted when you order. For example, on a ₹65,000 system you pay the remaining ₹64,000.
Guides and related pages
Yellow water at home or at your plant?
Book a lab test. We check your water and your pump, then tell you exactly what will fix it.
