T
The Daily Insight

Does chlorine kill iron bacteria

Author

Andrew White

Published Apr 17, 2026

Disinfectants are the most common chemicals used to treat for iron bacteria. The most common disinfectant is household laundry bleach, which contains chlorine. … Acids can dissolve iron deposits, destroy bacteria, and loosen bacterial slime.

How much chlorine does it take to kill iron bacteria?

As such, we recommend a higher chlorine concentration of about 500 ppm to address iron and sulfur bacteria problems. We also suggest that you shock-chlorinate your well about 2-3 times per year if you are experiencing bacteria and not using a continuous chlorinator or chemical injection system.

How does chlorine affect iron?

Because chlorine changes dissolved iron into oxidized iron that will precipitate, a filter may be needed to remove oxidized iron if continuous chlorination is used to control iron bacteria.

Will chlorine remove iron?

Chlorine dioxide can be used effectively for oxidation of iron from the moderately soluble ferrous state to ferric ion, resulting in the formation of ferric hydroxide, which forms a heavy gelatinous brown flocculation, which can be removed by sedimentation followed by filtration.

How do you remove iron bacteria from a water softener?

Disinfecting the well by adding chlorine is a common and practical method known to kill and control iron bacteria. If the iron bacteria is forming within water tanks or pipes because there is iron or manganese in your home water supply, you may want to consider a water treatment system.

How do you disinfect a well with iron bacteria?

Techniques to remove or reduce iron bacteria include physical removal, pasteurization (injecting steam or hot water into the well and maintaining a water temperature of 140°F/60°C for 30 minutes), and chemical treatment—most commonly well disinfection with chlorine, including shock (super) chlorination.

How do you chlorinate a well for iron bacteria?

Chlorination disinfects your well by destroying unhealthy bacteria and microorganisms and removing dissolved iron, manganese, and hydrogen sulfide. It can be managed easily at home with common household bleach and food grade white vinegar.

Is it safe to swim in a pool with iron?

Swimmers will not want to swim in water that’s high in iron; it will appear uninviting and dirty. … Chlorine must be removed to miniscule amounts before you attempt to bring down the iron levels. Since the source is typically the well, it’s recommended you add Iron Remover while the swimming pool is filling up.

What happens if you put iron in bleach?

The sodium hypochlorite active in liquid bleach reacts with the iron and changes it to the chemical form as rust. This new yellow/red discoloration then deposits on clothes, and after drying has essentially dyed the clothes.

What happens when iron and chlorine are heated?

HalogenReactionChlorineHot iron wool burns vigorously to produce orange-brown iron(III) chloride

Article first time published on

How do you get rid of iron bacteria?

  1. Disinfectants are the most common chemicals used to treat for iron bacteria. The most common disinfectant is household laundry bleach, which contains chlorine. …
  2. Surfactants are detergent-like chemicals, such as phosphates. …
  3. Acids can dissolve iron deposits, destroy bacteria, and loosen bacterial slime.

Will shocking a well get rid of iron bacteria?

With shock chlorination, the entire system (from the water-bearing formation, through the well bore and the distribution system) is exposed to water that has a concentration of chlorine strong enough to kill iron and sulfate-reducing bacteria.

How long should you wait to use water after you chlorinate a well?

Let the chlorinated water stand in the plumbing system for 12 to 24 hours. Do not run any water or flush toilets during this time. Use your reserves of fresh water for all purposes. Step 6 WAIT at least 12 hours before turning faucets back on.

How do I know if I have iron bacteria in my well?

The dramatic effects of iron bacteria can be seen in surface waters – brown slimy masses on stream bottoms and lakeshores and an oily sheen upon the water. Iron bacteria infestations in water wells can cause: ✓ Unpleasant taste and/or odors resembling fuel oil, sewage, or rotten vegetation.

Can I put a chlorine tablet in my well?

Pool chlorine tablets can be used in wells. Ground wells require maintenance just as other household components and one of the most important tasks is disinfecting it. … Because the tablets may sink to the bottom without completely dissolving, you must use them in combination with liquid chlorine.

Can iron bacteria be filtered?

A properly configured Iron Filter is an effective tool for Iron Bacteria treatment. These systems have 3 stages: Disinfectant Injection. Retention (time to kill bacteria)

How do I know if I have iron bacteria in my water?

  1. A rotten egg smell.
  2. A sewage-like odor.
  3. A swampy odor.
  4. A somewhat sweet smell.
  5. A taste that resembles fuel or rotten vegetables.

Can iron bacteria hurt?

Iron bacteria do not cause health problems, but they can have the following unpleasant and possibly effects: cause odors. corrode plumbing equipment. reduce well yields (clog screens and pipes)

Does bleach cause iron to rust?

Bleach. The active ingredient in bleach is a chemical compound called sodium hypochlorite. … The oxidizing properties of bleach accelerate rusting; iron loses electrons more readily in the presence of bleach than in plain water.

Can you use Clorox on metal?

2. Don’t use it to clean most metals. “Since bleach contains ingredients that serve as oxidants during the cleaning process, materials such as stainless steel can become oxidized and corroded when exposed to bleach,” says Dr.

Why is bleach water orange?

The reason why is that the chlorine oxidizes the colorless metal ions dissolved in the water and either causes them to become colored or to actually precipitate out of the water. It’s commonly call oxidized iron rust!

Why did shock turn my pool Brown?

Brown pool water is often caused by metals (iron) becoming oxidized in the pool water. If you shocked your pool water and it turned brown you probably have metals. Oxidized iron usually turns a brown or rusty color in the water.

Will a sand filter remove iron from pool water?

The sand filter will take out much of the particulate iron (and manganese). If you wanted to take out some of the dissolved iron, you could use some zeolite or green sand in place of the washed sand.

How do I remove copper and iron from my pool?

  1. Shock the pool water with lithium hypochlorite or sodium and keep the pump running for constant filtration.
  2. Add shock, which comes in chlorine and non-chlorine types, to your pool and follow up with a treatment of clarifier to reduce the look of iron buildup.

How does chlorine react with iron in water?

The growth of iron bacteria can be controlled by chlorination. However, when water containing iron is chlorinated, the iron is converted from the ferrous state to the ferric state–in other words, rust–and manganese is converted into black manganese dioxide.

What happens to chlorine when heated?

Chlorine reacts explosively or forms explosive compounds with many common substances including, acetylene, ether, turpentine, ammonia, fuel gas, hydrogen, fluorine, and finely divided metals.

What happens when chlorine reacts with iron II chloride?

Chlorine reacts with hot iron to form iron(III) chloride or ferric chloride. But when gaseous hydrogen chloride is passed over heated iron, the product will be iron(II) chloride or ferrous chloride and hydrogen. As chlorine is a powerful oxidising agent, it reacts with iron to form iron(III) chloride.

Is hydrogen peroxide better than chlorine?

Peroxide is more expensive than chlorine, works best in cases where iron and sulfur are present in the water. Since it works faster than chlorine, a contact tank may not be required. Peroxide is effective at a wider pH range as well, meaning it’s more effective on more types of water.

What does iron bacteria smell like?

Iron bacteria often produce unpleasant tastes and odors commonly reported as: “swampy,” “oily,” “cucumber,” “sewage,” “rotten vegetation,” or “musty.” The taste or odor may be more noticeable if the water is stagnant for some time.

Why is iron in water bad?

Harmful Effect of Iron in Drinking Water! Although a low level of iron cannot harm your health, it contains bacteria. In addition to this, high iron in water content leads to an overload which can cause diabetes, hemochromatosis, stomach problems, and nausea. It can also damage the liver, pancreas, and heart.

Will bleach hurt a well pump?

Disinfecting with a strong chlorine solution can dislodge this scale and plug or damage your pump, and/or cause problems elsewhere in the plumbing system.