Water Saving Tablets

Toilet Displacement Devices

For decades toilet displacement devices have been used on non-conserving toilets in order to reduce the volume of water used each time the toilet is flushed. Typical displacement devices include bricks, plastic bottles, or plastic bags. Lighter items must be weight loaded in order to insure their stability.

The effect of these devices has been to reduce flows by a modest amount but with uncertain effects upon toilet performance. With older 5.5 gallon-flush toilets, they might have little effect upon performance but also little impact on the large water use. With new 1.6 gallon-flush toilets they might achieve the same saving but adversely affect bowl clearance and carrying ability.

For a 5.5 or 3.5 gallon-flush toilet it may be worthwhile at least trying displacement devices. If a brick is used, however, make sure to wrap it in a plastic wrap, or place it into a small garbage bag before placing it into the tank. Some bricks may deteriorate slightly if constantly in water and cause damage to the flushing mechanisms.

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