Manatee · Sarasota · Hillsborough · Pinellas · Charlotte
Air Injection (AIO) Iron & Sulfur Removal
4.7★ from 212 Google reviews · WQA Gold Seal Puronics dealer · Our own techs, no subcontractors
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Air Injection Iron & Sulfur Filters
Rotten-egg smell, orange staining and rusty water on a private well? An air-injection oxidizing (AIO) filter removes iron, manganese and hydrogen-sulfide — no chemicals, no salt, no monthly maintenance.
- Removes dissolved iron, manganese and hydrogen sulfide (the “rotten-egg” gas)
- Uses a pocket of compressed air — no chlorine, potassium permanganate or salt to buy
- Automatic backwash refreshes the air pocket and flushes captured iron
- Ends orange toilet rings, rusty laundry stains and sulfur odor
- Sized to your iron, manganese and sulfide levels after a free well-water test
Private wells across Manatee, Sarasota and surrounding counties commonly pull up dissolved iron, manganese and hydrogen sulfide. You can’t see dissolved iron in a fresh glass, but the moment it hits air it oxidizes — which is why you get orange staining in toilets and tubs, rusty spots on laundry, and that unmistakable rotten-egg smell at the tap.
An air-injection oxidizing (AIO) filter fixes all three at once. As water enters the tank it passes through a pocket of compressed air held at the top; the oxygen instantly oxidizes the iron, manganese and sulfide into solid particles, and the filter media below traps them. Every night the system backwashes automatically, rinses the captured contaminants to drain, and draws in a fresh air pocket — so there are no chemicals to mix, no salt to haul and nothing to refill.
Because iron and sulfur foul softeners and reverse-osmosis membranes, the AIO belongs first in the treatment train — it protects everything downstream. If your water is also hard, we pair the AIO with a softener; if you want spot-free drinking water, we finish at the kitchen with reverse osmosis. We only recommend what your well-water test actually calls for.
Where air injection is the right answer — and where it is not
AIO is the cleanest solution to a very specific problem: dissolved (clear-water) iron, manganese and hydrogen sulfide on a well, at moderate levels, in water that is not acidic. When that is what you have, nothing else is this low-fuss — no chemical to buy, nothing to mix, nothing to run out of on a Sunday.
On its own it is the wrong answer in four situations, and we will tell you if you are in one of them:
- Iron bacteria. Reddish-orange or black slime in the toilet tank means you have a biological problem as well as a chemistry one. Oxidation alone does not clear a colonized well, and the bacteria will foul the media bed from the inside. That needs shocking and continuous disinfection first — see the order treatment has to go in.
- Acidic water. Oxidation slows down badly at low pH. Below roughly 6.8 the iron does not convert and drop out the way it should, the filter underperforms, and everyone blames the filter. On acidic wells the pH neutralizer goes in ahead of it.
- Very high iron. Past a certain level the air pocket cannot keep up and you need chemical injection instead of air. Chlorine injection is the heavier tool for that.
- Tannins. Yellow or tea-colored water is organic, not metallic. Air injection does not touch it — that is a tannin filter.
This is why we test before we quote. Four different well problems look nearly identical from the kitchen tap and take four different systems, and the most expensive mistake in well water is the right equipment installed in the wrong order.
What maintenance actually looks like
No salt and no chemical is the main appeal, and it is true. But “no maintenance” is not quite true, and we would rather be straight about it. The valve draws and refreshes the air pocket on every backwash, and that is the part to watch: a valve that stops drawing air stops oxidizing, and the first sign is almost always the smell coming back. The media bed lasts years but is not permanent, and it fouls faster if iron bacteria were never dealt with.
We check the air draw, the backwash cycle and the water at service visits. If the smell returns between visits, call us — it is usually the air draw, and usually a quick fix rather than a new system.
Common questions
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What your neighbors say
4.7★ from 212 Google reviews.
“I cannot say enough amazing things about this company and system! We had three companies come out and Hydrology stood out on every level.”
“We’ve had our system now a month and absolutely love it. My wife is a hair beautician with over 30 years of experience and definitely can tell the difference with the water.”
“Wow, I can definitely feel a difference in my hair, skin, and when I wash my hands. I knew getting a water softener was a priority and I’m so glad I decided to go with Hydrology.”
Every review is on our Google profile — read all of them there. We don’t cherry-pick; we just answer the phone.
Straight answers
Common questions.
What people ask before they book.
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What hard water does to a home: the Battelle study →
