How to Treat Smelly Water

Does Your Water Smell Bad? Here’s What It Means & How to Fix It

If your water has an unpleasant odor, it may be due to environmental factors, pipe erosion, or bacteria growth. Common smells include:

• Rotten eggs or sulfur
• Fishy or musty odors
• Sewage-like smells
• Chlorine or bleach scent
  

Understanding what’s causing the odor is key to finding the right solution.

What Causes Smelly Water?

1. Water Smells in One Faucet Only

• The issue is likely with the fixture or pipes leading to that faucet.
• Run the water for a few minutes, if the smell disappears, it’s a localized issue.
  

2. Odor From All Faucets, But Fades After Running Water

• The smell may be coming from your plumbing system, rather than the water source itself.

3. Only Hot Water Smells

• The issue may be with the magnesium rod in your hot water heater.
• A plumber may need to replace the rod or inspect for bacterial growth.

4. Both Hot & Cold Water Smell Bad

• The problem could be coming from your water source or your plumbing system.

What Does the Smell Mean & How to Fix It?

Rotten Egg / Sulfur Smell

Cause: Bacteria growth in your drain, water heater, or water source.
✔️ Fix:

• Flush & clean your drains.
• If the issue is bacterial growth, a plumber may need to replace the magnesium rod in your water heater.
• For wells, shock chlorination may be required.

Bleach / Chlorine Smell

Cause: Chlorine is used by cities to prevent bacterial growth in water.
✔️ Fix:

• Run the water until the smell dissipates.
• If your home uses well water, a full system flush may be needed.

Musty or Earthy Odor

Cause: Bacteria in your drain or water source caused by decaying matter.
✔️ Fix:

• If you have public water, the issue may be low chlorine levels—contact your water supplier.
• For wells, pollution may be a factor—testing and treatment may be needed.

Sewage-Like Smell

Cause: Possible sewage contamination in your water.
Immediate Action Required:
Contact a professional immediately for water testing.
If you use a well, contact the health department.

How to Ensure Clean, Fresh Water

• A water filtration system can remove sediment, metallic particles, and bacteria that cause odors.
• Testing your water is the first step to identifying the issue and finding the right treatment solution.