Home › Reviews › US Water Systems › Matrixx InFusion

US Water Systems Matrixx InFusion Review

Peroxide injection iron and sulfur removal system · Updated May 2026

US Water Systems Matrixx InFusion peroxide injection iron and sulfur removal system
Starting price
$2,892
Treatment method
H2O2 injection
Iron capacity
Up to 30 PPM
Handles H2S
Yes

Who this system is for

The Matrixx InFusion is a peroxide injection iron and sulfur removal system designed for well water supplies where standard air injection falls short. It's the right choice when:

  • Iron concentration exceeds 7 PPM (the practical ceiling for air injection systems)
  • Hydrogen sulfide (sulfur/rotten egg odor) is present simultaneously with iron
  • Iron bacteria are present and require oxidative treatment to break the biofilm
  • You need reliable, consistent removal at commercial flow rates with minimal operator attention

If your iron concentration is under 5 PPM with no H2S, an air injection system will cost significantly less and handle the load adequately. The InFusion's value is in the high-load and simultaneous-contaminant scenarios where simpler systems are not reliable.

How peroxide injection works

Hydrogen peroxide (H2O2) is injected into the incoming water line ahead of the treatment vessel. H2O2 is a powerful oxidant — it rapidly oxidizes ferrous (dissolved) iron to ferric (particulate) iron, and simultaneously oxidizes hydrogen sulfide to elemental sulfur. Both are then captured by the backwashing filter media in the treatment vessel.

The peroxide reaction is faster and more complete than air injection, which is why it handles higher iron and H2S concentrations. The reaction byproducts — iron precipitate and elemental sulfur — are backwashed out of the media on a timed cycle. Properly sized systems run periodic backwash automatically, with no chemical addition required beyond the peroxide solution.

Residual H2O2 after the filter is typically at low, non-harmful levels, and a carbon post-filter can be added if any residual is a concern for downstream applications.

Specifications

  • Starting price: $2,892 (sizing varies by flow rate)
  • Iron removal: Up to 30 PPM ferrous and ferric iron
  • H2S removal: Yes, simultaneous with iron
  • Iron bacteria: Effective — peroxide breaks iron bacteria biofilm that air injection cannot
  • Control valve: Clack or equivalent commercial-grade valve with programmable backwash
  • Peroxide feed: Automatic peristaltic pump, field-adjustable dosing rate
  • Media: Catalytic filtration media (proprietary blend)
  • Commission rate: 10% through US Water Systems direct program (15% at qualifying sales volume)

Sizing considerations

The InFusion must be sized for your peak flow rate, not average daily use. Undersizing the flow rate leads to inadequate contact time between the peroxide and the iron, resulting in incomplete oxidation and iron breakthrough. Key inputs for sizing:

  • Peak flow rate (GPM) at the facility
  • Iron concentration (PPM) — determines peroxide dosing rate
  • H2S concentration (PPM) — additional peroxide demand
  • pH of the source water — affects oxidation reaction efficiency

US Water Systems sizes the system based on these inputs. Get a water test before specifying — guessing at iron concentration leads to under- or over-treating.

Verdict

The Matrixx InFusion is a well-engineered commercial-grade iron removal system that handles the scenarios where simpler systems fail. At $2,892 and up, it's not cheap — but for a facility dealing with high iron or simultaneous iron and sulfur, the cost is justified by the reliability and the avoidance of the equipment damage and service calls that untreated iron causes. The 10% affiliate commission (15% at volume) reflects a genuine program, not a promotional rate.

Check Price + 5% Off at US Water Systems →

Affiliate link — we earn a commission at no extra cost to you. Clicking automatically applies a 5% customer discount.

Related pages