Is it common for softener installations not to include water for toilets?

It is common for softener installations not to include water for toilets primarily because toilets do not typically require softened water to function efficiently. The main purpose of water softening is to prevent scale buildup and other issues associated with hard water, which can impact appliances, plumbing, and other fixtures more sensitive to mineral deposits.

In many households, the water used in toilets comes directly from the main supply and does not pass through the softening system because softening adds sodium ions to the water, which may not be desirable for all uses. By excluding toilets from softening, homeowners can conserve on salt use and also avoid potential effects on water supply standards, particularly in areas where high salt levels may be a concern. Therefore, it is practical and economical to keep toilet water separate from the softened supply.