How To Remove Iron From Well Water

How does iron get into well water?

Iron can enter your water supply through two primary pathways: natural seepage and corroded plumbing.

 

Natural seepage: Iron typically enters well water by leaching from the earth's crust. Rainfall and snowmelt percolate through soil, dissolving iron deposits and carrying them into groundwater sources.

Corroded plumbing: Older iron pipes or rusting fixtures can release small rust particles into the water, leading to brown discoloration and orange stains in sinks and drains. In such cases, replacing the well piping may be required.

 

Comprising over 5% of the earth's crust, iron is among the most abundant natural resources worldwide. Its occurrence in well water is inevitable, regardless of how well maintained a private well may be.

 

Types of iron in well water

Ferric iron

Ferric iron refers to iron that has undergone oxidation, typically appearing as reddish-brown solid particles-similar to rust-when it is no longer dissolved in water. Because it exists in solid form, ferric iron is the easiest type of iron to filter out.

 

Appearance: Ferric iron discolors water and leaves stains on surfaces it contacts. If your water has a distinct orange or red hue, this strongly indicates a high concentration of ferric iron in your well.

 

Ferrous iron

Ferrous iron, also known as clear-water iron, remains dissolved and invisible in water until it undergoes oxidation and converts into ferric iron. It is commonly found in deep wells where water receives limited exposure to sunlight.

 

Appearance: Water containing ferrous iron initially looks perfectly clear. However, once exposed to air, it oxidizes and begins to form solid particles (turning into ferric iron). For example, if a glass of this clear water is left standing overnight, it will develop a reddish-brown color or show sediment at the bottom by morning.

 

Bacterial iron

Bacterial iron forms when bacteria combine with iron, creating the most problematic and troublesome form of iron found in wells. It often results from inadequate maintenance or improper servicing of the well. For instance, if a well pump was not properly sanitized before reinstallation, residual bacteria may multiply and bond with iron in the water.

 

Bacterial iron can cause severe issues in your well system, such as: Clogged pipes, Damage to water softeners, sediment pre-filters, and booster pumps, Unstable water pressure, Conditions that promote the growth of pathogenic bacteria.

 

Appearance: Bacterial iron appears as a bright red, slimy substance similar to tomato soup. It adheres to pipe interiors as a thick brown biofilm, blocks well pumps, congests plumbing fixtures, and leaves swampy, reddish sludge in toilet tanks and bowls.

 

How to remove iron from well water

Identify the type of iron in your water

Not all iron in water is identical; it can vary from a dissolved, invisible compound to an unpleasant reddish sediment. The approach to treating your well water must correspond to the specific form and concentration of iron present.

 

1.Begin by conducting a water test. This will provide precise information about your water quality and guide you toward the most suitable solution.

2.Laboratory water reports quantify total iron accurately, whereas visual examination only detects already-precipitated ferric iron.

3.For a rough estimate of iron concentration in parts-per-million, iron test strips can be used.
4.You may also consult a water specialist for a professional assessment.
5.A visual inspection of the well itself can also be informative.

 

Once the type and amount of iron have been accurately identified, you can select an effective treatment method to eliminate it.

 

Select a treatment option

 

Fortunately, each of the three primary types of iron found in well water can be effectively addressed by at least one established treatment method. The solution for your home might be as straightforward as adding a filter, or it could necessitate a more complex, professional system.

 

When selecting an iron removal method, cost should not be the primary deciding factor, as an inexpensive option is not always an effective one. There is no universal "magic bullet" that eliminates every form of iron. Therefore, the most economical and efficient approach depends entirely on correctly identifying the type of iron contaminating your well.