Waterdrop 10UA PRO Under Sink Water Filter. No drilling required, with a time reminder, and easy installation. Reduces lead, chlorine, and unpleasant tastes and odors. NSF/ANSI 42 certified. 11,000-gallon lifespan. Does not reduce TDS. Safety with precision filtration: The StandFit WD-UL12A under-sink filter is NSF/ANSI 42 and 372 certified and has been tested by a third-party organization. It removes PFOA, PFOS, rust, lead, chlorine, heavy metals, chemical impurities, and sand, improving the taste and odor of water (Note: Does not remove TDS). Made with lead-free materials, it can be used with peace of mind in homes with babies and the elderly. For more details, search for "WD-UL12A" on the IAPMO website. Drill-free installation: The StanFit under-sink water filter is designed for cold water and can be installed with a twist-lock wall mount, requiring no drilling, which reduces installation time by up to a third. The suction cup base maintains stability even with a 3-liter water flow or water movement. It comes with 3/8-inch piping compatible with US standard sink valves and a 3/8-inch to 1/2-inch conversion adapter for easy connection to cold water pipes and faucets. Solves clogging problems: By expanding the filtration area, the under-sink water filter's dirt absorption capacity is improved by 20 times, improving filtration efficiency and reducing clogging. Filter life reminder: The indicator built into the under-sink water system WD-UL12A lights up red and beeps to notify you when it's time to replace the filter. This smart reminder allows you to continue providing clean water with peace of mind. Excellent lifespan and high flow rate: This large-capacity under-sink water system can purify up to 11,000 gallons (approximately 4,300 liters) of water and boasts an amazing lifespan of 12 months. The improved 3/8-inch outlet achieves a high flow rate of 5.026 liters/minute, maintaining efficient water flow and preventing clogging, allowing for long-term use. Wide range of applications and connections: The StanFit under-sink water system is ideal for kitchens, RVs, offices, and more. The compact design is suitable for both home and commercial use. It can be easily connected to faucets with the included adapter, supporting a wide range of applications.