CuZn Bath Ball Faucet Filter - Bathtub Water Purifier - Made in USA Reduces Chlorine for up to 12 Months Once Activated, Best in Class 1 Year Lifetime Naturally Softens Water for Smoother Skin and Softer Hair. Great for Sensitive Skin Reduces Many Water Soluble Heavy Metals (including lead) Easy to Replace Filter, Improved Strap Design March 2016 The Bath Ball's Purification Process Purifies the Water Without Removing Health Beneficial Hardness Minerals, a TDS or PPM Meter IS NOT an Effective Way of Monitoring this Type of Filtration System