As relaxing as they are, jetted whirlpool tubs are a breeding ground for bacteria and mold. Manufacturers of whirlpool tubs recommend regular flushing of the jet system to reduce the accumulation of bacteria and soap scum in the jetted tub’s water lines.

As relaxing as they are, jetted whirlpool tubs are a breeding ground for bacteria and mold. Manufacturers of whirlpool tubs recommend regular flushing of the jet system to reduce the accumulation of bacteria and soap scum in the jetted tub’s water lines.

Following the tub manufacturer’s recommendations is the best way to maintain any tub, but if the owner’s manual is not available, the following instructions will do the trick:

Step 1: Before flushing the jet system, adjust the tub jets so there is no air induction. This often means turning the jets fully clockwise or pointing them upward.

Step 2: Fill the tub with hot water until the water level is at least 2 inches above the highest jet.

Step 3: Pour 1 cup of household bleach into the water. Kohler Manufacturing recommends using 2 1/2 cups of bleach when cleaning its whirlpool tubs. Several other manufacturers suggest using 1 cup. Too much bleach could potentially damage the gasket materials, so it is wise to default to the lesser amount if the manufacturer’s instructions are not available.

Step 4: Sprinkle or pour two teaspoons of automatic dishwasher detergent — such as Cascade powder or liquid — into the tub water.

Step 5: Turn the jets on and run the tub for at least 10 minutes.

Step 6: Drain the water and clean away any residue from the tub walls and base.

Step 7: Fill the tub a second time using cold water and run the jets for 10 minutes to rinse the system.

Step 8: Drain the tub and use a non-abrasive cleaner to remove any grime and residue left on the tub walls and base.

Step 9: Use cotton swabs or a toothbrush to clean in and around the jet openings.

Repeat the jet system flushing process at least once a month to maintain the water lines in the jetted tub. For tubs that are seldom used, water lines should be flushed at least once every three months to keep bacteria growth to a minimum.

For added protection against mold and bacteria growth, use a biofilm cleaner specifically made for jetted tub water lines to flush the lines once or twice a year.

To increase the life of your tub, remember to operate the tub jets with clean, clear water only. Avoid using the jets when oils, bath salts or soaps are present in the bath water.

— Have a home improvement question for the Fix-It Chick? Email it to Linda Cottin at features@ljworld.com.