A well screen is placed below the well casing in the well and prevents sediment from entering your well. The well screen can get clogged due to sediment buildup and slime (bacteria). Iron bacteria are present in water and form slime on the well screen, which inhibits water flow. The clogging of the well screen causes the recovery rate to decrease and reduces the flow rate. Hence, it is crucial to clean the well screen periodically.
In this article, we are going to discuss how to clean a well screen.
How to Clean a Well Screen?
Check the state laws before starting well screening. Some states don’t allow well owners to carry out the maintenance tasks. You may need to hire a licensed state contractor for this task.
Things you will need
- Granular Acid (Muriatic, Phosphoric or Sulfamic)
- Measuring Cup
- Protective Gear
Step 1: Opening the Priming Plug Port
First of all, locate the priming plug port of the well. It is usually located before the pump inlet. If you can’t find it, refer to the well completion report. All the ports and other details are mentioned in the blueprints of the well.
Step 2: Adding the Acid
Wear protective gear such as a face mask, safety goggles, and gloves. Measure half or a full cup of the acid and pour it down the plug opening. The granules will dissolve slowly and gradually reach the well screen. Granules release slowly and are safe to work with it as compared to liquid acids.
Step 3: Wait for the Acids to Work
The acid will not work instantly. It may take up to 12 hours for the well screen to clear off. Once the screen is unclogged, you will notice a visible difference in the flow rate and refilling rate. If there is no increase in the flow rate, there may be some other problem with your well.