General guideline:
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City water: Every 12 months
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Well water: Every 6–12 months
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High iron: Every 3–6 months
If you see slime, clean immediately regardless of schedule.
Final Thoughts
Slime in your water softener is common — but it’s also a sign your system needs attention.
Left untreated, it can:
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Reduce water quality
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Damage equipment
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Increase operating costs
The good news? With proper maintenance, cleaning, and water testing, slime buildup is completely manageable.