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How to Acidize the Points of a Water Well

Chris Bond

When water wells cease to function properly, it may be necessary to acidize. The addition of acids into a well will stimulate productivity by breaking down and removing mineral deposits that may be impeding the well's proper operation.

Know how to properly handle acidic compounds before attempting to use them.

A variety of acids may be used to correct the process, depending on the materials used to construct the well. The acid is pumped into the well's bore under pressure to effect a chemical reaction with the rock to enlarge the existing points, or to create new chambers within the well.


    Know if your well is constructed of stone, plastic or some other material.
  1. Determine the materials used to construct your well. This includes the casing and the screen. This will dictate what type of acid should be used.

  2. Sulfur buildup in wells is prevalent in some areas of the country.
  3. Determine the type of buildup that is preventing proper well operation. This may involve contacting well professionals in your area as well problems tend to stem from many of the same causes in areas with the same soil types and water source.

  4. Acids containing phosphorous can be harmful to downstream ecosystems if spilled.
  5. Select an acid appropriate for your well. This could be hydrochloric acid, sulfamic acid, glycolic acid or phosphoric acid. Each type will correct a specific problem and each has unique caustic properties. Know what acid you need before obtaining any.

Acidizing the Well

  1. Gather all personal protective equipment and clean water. Wear equipment at all times when handling acid.

  2. Make sure to use an appropriately-sized pump for the volume of solution to be applied.
  3. Pump acid into the well. If using a concentrate, prepare solution first by adding the acid to the water. Allow adequate time for acid to dissolve minerals and blockages.

  4. This process can be done as often as is needed.
  5. Remove water from well in cases of extreme blockage by pumping out acidified water. Reapply acid and remove again as needed.

  6. Warning

    Acids are extremely harmful if used improperly, and can even cause death. If there is any uncertainty about your ability to handle them, call a professional. Always wear protective clothing and always remember if mixing acid and water to always add acid to water, not vice-versa.