[Important Note] This under-sink water filter system is not designed to reduce TDS. It is intended for use with treated municipal tap water and cold water sources only. It is not recommended for well water or hot water applications.[Replacement Filters] When it is time to replace the filter in your WD-TSB-ALK under-sink water filtration system, please use the following product codes: WD-10PP filter (234082446628), WD-10GC filter (234082387554), or WD-10ALK filter (236343841539).[Enhanced Water Quality] The alkaline filter in this system adds minerals like calcium, magnesium, sodium, and potassium to the water, which can contribute to a more balanced taste. The presence of these minerals is also associated with benefits for bodily functions such as bone and digestive health. This system is designed to improve the taste of tap water; please note it does not reduce TDS.[Comprehensive 8-Stage Filtration] This system utilizes three filters to achieve an 8-stage filtration process, which includes alkaline filtration. It is designed to reduce substances such as chlorine, unpleasant tastes and odors, fluorides, heavy metals, rust, sediment, sand, and other particles, as verified by third-party laboratory testing. The filtration media include KDF for heavy metal reduction, ion exchange resin for fluoride reduction, and an alkaline stage for mineral addition and taste improvement.[Extended Filter Service Life] The three filters in this system are designed to provide water filtration for an extended period. Under typical household conditions, they may last up to 12 months before needing replacement, which can help reduce maintenance frequency. For periods of non-use, such as during a vacation, storing the filters in separate sealed plastic bags in the refrigerator (not freezer) can help maintain their condition.[Straightforward Installation] The system features a twist-and-lock design intended to simplify installation and filter replacement. Many users find they can install the unit or change a filter themselves quickly, without requiring professional assistance.[Reduced Clogging Potential] An upgraded design provides increased surface area for filtration, which helps in capturing impurities and is intended to minimize the potential for clogging. This contributes to consistent water flow and can help lower maintenance needs.