Softener emits rotten egg or musty odor from water

Safety first: Use gloves and eye protection when handling sanitizing chemicals. Follow all label directions.

• Sanitize resin tank: Use a Waterguy-approved resin bed sanitizer (such as diluted household bleach per manufacturer instructions). Add to brine well and run a manual regeneration.
• Clean brine tank: Empty the brine tank, scrub interior surfaces with a mild bleach solution, rinse thoroughly, and refill with clean salt.
• Increase regen frequency: Adjust settings so the softener regenerates more often, reducing stagnation.
• Test raw water: If odor persists, test well water for sulfur and bacteria; additional treatment (e.g., chlorination or aeration) may be required.