Good news
One air injection system removes iron AND sulfur
Iron and hydrogen sulfide are both addressed by air injection oxidation. The Springwell WF1 removes up to 7 PPM iron AND 8 PPM hydrogen sulfide in a single tank. If both are your problems and they're within these limits, one system solves both.
How air injection handles both iron and sulfur
The air pocket at the top of an AIO tank oxidizes both dissolved iron and hydrogen sulfide:
- Iron (Fe²⁺) oxidizes to ferric iron (Fe³⁺) → filtered out by greensand media
- Hydrogen sulfide (H2S) oxidizes to elemental sulfur → trapped in media bed
- Daily automatic backwash flushes both from the media bed
When one system isn't enough
| Iron under 7 PPM + H2S under 8 PPM | Springwell WF1 — single tank solution |
| Iron under 7 PPM + H2S over 8 PPM | Matrixx InFusion — peroxide injection for high sulfur loads |
| Iron over 7 PPM | Matrixx InFusion — peroxide injection handles iron + sulfur together |
| Iron bacteria present | Chemical oxidation + UV — more aggressive approach needed |
Testing before buying
Know your numbers before buying. Test for:
- Iron (PPM) — determines if WF1 is sufficient or heavier treatment needed
- Hydrogen sulfide (PPM) — field test required, H2S dissipates in mail-in samples
- Manganese (PPM) — often present alongside iron, WF1 handles up to 1 PPM
- pH — affects oxidation efficiency; below 6.5 needs acid neutralizer upstream
- Bacteria — if present, add UV downstream of iron/sulfur treatment
When you need more than air injection
If your test shows iron above 7 PPM, hydrogen sulfide above 8 PPM, or you have iron bacteria — air injection won't be enough. The next step up is peroxide injection, which dissolves H2O2 into the water before filtration to oxidize iron and sulfur at much higher concentrations than air alone can handle.
US Water Systems Matrixx InFusion
Peroxide injection — handles high iron + sulfur · From $2,892
Check Price + 5% Off at US Water Systems →Affiliate link — automatic 5% discount applied at checkout.