BWT Brine Tank Bacterial / Organic Contamination

BWT softener emits a foul or musty odor from the brine tank

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Possible Causes

Long periods without regeneration, Organic debris in brine tank, Use of non-approved salt with impurities, Poor ventilation around tank

How to Fix / Troubleshooting

Safety first: Wear gloves and eye protection when cleaning the brine tank. Disconnect power and close water valves.

  • Empty brine tank: Scoop out remaining salt and brine into suitable containers. Dispose of according to local regulations.
  • Clean interior: Wash the tank with warm water and a mild bleach solution (follow BWT or local guidelines). Scrub all surfaces and rinse thoroughly.
  • Inspect components: Clean the brine well, float, and air check valve. Remove any sludge or deposits.
  • Refill with approved salt: After drying, refill with fresh BWT-approved tablet or block salt and water as specified.
  • Run regeneration: Perform a full regeneration to flush any residual odors from the system.

If odors persist in household water, consider disinfecting the entire system under professional guidance.

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Repair Difficulty

Easy 2/5

Required Part

BWT brine tank
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