How to Get Iron Out of Sprinklers

Heavy iron deposits can take the fun out of a sprinkler.

Lawn sprinklers pass water through several internal pathways and water-ejecting holes, making them vulnerable to mineral deposits. Mineral deposits can clog the sprinkler head, causing irregular water dispersal and possibly jam the sprinkler head. Sprinklers running off well water are vulnerable to iron deposits, which can quickly turn into rust and cause unsightly stains on walls and concrete while causing the sprinkler to malfunction. Inexpensive household cleaners can clear out iron deposits to restore the sprinkler's performance.

Things You'll Need

• Brass-bristle wire brush
• Small bucket
• Chemical rust deposit remover
• Chemical-resistant gloves

Instructions

1. Remove the sprinkler from the hose and clean off any loose dirt or grime by rubbing it with a brass-bristle wire brush under a stream of water. If possible, separate the sprinkler head from its detachable base to isolate the problem areas.

2. Fill a bucket large enough to hold the sprinkler head with equal parts cool water and household rust remover. There are several chemicals available that attack iron and rust deposits, including toilet bowl cleaners. Check to see if the chemical is safe for use on plastic parts or rubber grommets inside the sprinkler head.

3. Submerge the sprinkler head in the mixture and let it sit for 30 minutes. While wearing chemical-resistant gloves, remove the sprinkler head from the bucket and thoroughly rinse it off in a sink with cold water.

4. Pass the brass-bristle wire brush through the water pathways to abrade remaining iron deposits. Rinse water through the sprinkler head again to clean debris that flaked off from the brushing.

5. Reinstall the sprinkler and turn it on to see if it functions properly.

Tips & Warnings

• You can remove heavy rust deposits with naval jelly, which is a heavy-duty rust remover. However, naval jelly will damage plastic, fiberglass and some metals, so apply it carefully to avoid damaging the sprinkler mechanism.

• Rust removal solutions are made with harsh chemicals, including strong acids. Always follow the manufacturer’s safety recommendations and avoid all contact with bare skin.

References

• Family Handyman: How to Unclog a Sprinkler
• Refinish Furniture: How to Remove Rust