Well water treatment

Hydrogen Peroxide Water Treatment

For well water with iron, sulfur, or other oxidizable contaminants, hydrogen peroxide injection is an effective treatment that also provides disinfection. It breaks down into oxygen and water, leaving no chemical residual.

Oxidation without chemical residuals

Hydrogen peroxide (H2O2) is injected into your water supply ahead of a contact tank. It oxidizes iron, sulfur, and other contaminants so they can be filtered out. The peroxide itself breaks down into oxygen and water, leaving no chemical trace behind.

  • No chlorine residual. Unlike chlorine injection, there is nothing left in your water after treatment.
  • Effective against iron and sulfur. Breaks down iron and hydrogen sulfide (the rotten egg smell) reliably.
  • Works with a filter. Oxidized iron and manganese are filtered out downstream, keeping your water clear.
  • Dosing is controlled. The injection rate is set based on your water test results, not a generic formula.

Iron removal

Red or brown staining on fixtures and laundry indicates iron in your well water. Hydrogen peroxide oxidizes dissolved iron so it can be filtered before reaching your fixtures.

Sulfur odor

The rotten egg smell in well water comes from hydrogen sulfide gas. Peroxide oxidizes it quickly and the treated water has no odor and no chemical taste.

Manganese

Black staining from manganese requires stronger oxidation than iron. Hydrogen peroxide handles manganese effectively at the right dosage levels.

Hydrogen peroxide vs chlorine injection

Hydrogen peroxide

  • + Breaks down into oxygen and water
  • + No chemical residual in treated water
  • + Also provides disinfection
  • + No disinfection byproducts
  • + No chlorine taste or smell
  • - Slightly higher per-gallon cost than chlorine

Chlorine injection

  • + Lower chemical cost
  • + Also provides disinfection
  • - Leaves chlorine residual in water
  • - Can produce disinfection byproducts
  • - Chlorine taste and odor in treated water

Arsenic removal: oxidation, filtration, and RO polishing

Arsenic in well water is a health concern that requires a specific, sequenced treatment process. Hydrogen peroxide plays a critical first role — oxidizing arsenic from its more soluble trivalent form to a filterable pentavalent form — before downstream media filtration and point-of-use reverse osmosis complete the removal.

Step 1

Oxidation

Hydrogen peroxide is injected into the water supply ahead of the treatment train, converting arsenic(III) — the dissolved, mobile form — to arsenic(V), which binds to filter media and can be removed mechanically.

Step 2

Greensand+ Filtration

Inversand Greensand+ media captures the oxidized arsenic(V) as water passes through. The manganese oxide coating on the media is kept continuously oxidized by the peroxide already present in the water — the same catalytic process used in our iron and manganese filters. No separate KMnO4 regenerant tank required.

Step 3

RO Polishing

A certified reverse osmosis system at the drinking tap provides a final barrier for arsenic and any residual trace contaminants. Our Aqua Flo QCRO4V-50 is certified under NSF/ANSI 58 for arsenic reduction, offering verified performance at the point of use.

Where we encounter arsenic in Central Illinois

Arsenic has been identified in well water in areas around Lexington and Edwards, IL. It is not widespread across all well water in the region, but because it is colorless, odorless, and tasteless, it will not be detected without testing. If your well is in an area where arsenic has been found, or if you have not had your water tested for arsenic, we include it in our standard well water analysis. Treatment is only recommended when testing confirms it is present at levels that warrant action.

Hydrogen peroxide treatment for farms and agriculture

Agricultural water problems are different from residential ones in scale and consequence. Contaminated well water hits livestock health, irrigation performance, and operating costs all at once. Hydrogen peroxide injection treats all three without leaving residuals that could affect animals, crops, or equipment.

Agricultural well disinfection

Private agricultural wells can harbor bacteria, iron bacteria, and other biological contamination that standard testing misses. Hydrogen peroxide injection provides continuous disinfection at the point of entry, ahead of any other treatment equipment. No chlorine residual means no concern about treated water reaching livestock, crops, or food contact surfaces.

Irrigation line treatment

Iron in irrigation water builds up in emitters, nozzles, and drip lines over time, restricting flow and reducing coverage uniformity. Hydrogen peroxide oxidizes dissolved iron before it reaches the system, keeping lines clear and maintaining consistent distribution. It also controls biofilm and algae growth inside irrigation infrastructure.

Livestock and poultry water

Water quality directly affects animal consumption, health, and performance. Iron taste and odor reduce water intake. Bacterial contamination in waterers creates ongoing health risk. Treating well water with hydrogen peroxide ahead of livestock waterers improves palatability and reduces biological load, with no chemical residuals that could affect the animals.

Agricultural systems require a site visit

Farm and agricultural installations involve higher flow rates and different plumbing configurations than residential systems. We assess your well, water supply, and application before recommending equipment or dosing rates. For larger operations, hydrogen peroxide treatment often pairs with a Canature commercial softening system — see our commercial and agricultural water treatment page for details.

Have a question? We will call you back.

Drop your name and number and we will reach out, usually the same day.

Book Free Water Test Schedule Salt Delivery Book Service Visit
Your information is never sold or shared.

Well water problems start with a test

We test your well water first and recommend treatment based on what we actually find.