The Milli-Q Integral water purification system provides labs with an innovative alternative to centralized “loop” configurations. The Milli-Q Integral system’s single water production unit produces pressurized pure and ultrapure water directly from tap water. Users switching from a centralized water purification system/distribution loop to the new Milli-Q Integral systems will gain direct control over water quality throughout the entire purification process, due to the system’s high-precision integrated TOC and resistivity monitoring devices, which detect both ionic and organic contaminants. The system has a reduced “footprint” for easy bench integration, or for convenient installation anywhere in the lab (including wall installation). Separate Points-of-Delivery (POD) dispensers deliver either ultrapure water (from the Q-POD^® unit), or pure water (from the E-POD^™ unit) at adjustable flow rates ranging from drop-by-drop to 2 L/min. A range of systems exists to provide users with 70 to 360 L/day of pure and/or ultrapure water. In addition, each system supports up to three POD units, for water delivery exactly where it is needed. Pure water storage reservoirs are designed to accommodate volumes of 30 to 350 L.