In household water treatment systems, water softeners are widely‑adopted premium water‑use equipment, valued for limescale reduction, enhanced bathing sensory experience, and protection of water‑using appliances. Nevertheless, salty‑tasting softened water is one of the most frequently reported user
In many moderately hard or hard water regions of the United States, residential ion-exchange water softeners have long been standard household appliances for pipeline protection and extending the service life of water heaters. Over the past decade, however, bans and restrictions on salt discharge ha