The APEC ROTL-600 is APEC Water Systems’ tankless 3-stage reverse osmosis system — designed to deliver RO-quality drinking water without the bulky storage tank that traditional reverse osmosis systems require. Under-sink installation in less than 25 minutes per APEC’s published installation time, and the tankless design frees up cabinet space for actual storage rather than dedicating half the under-sink area to a 4-gallon pressure tank.
The 3-stage filtration sequence: first-stage sediment/carbon filter captures sand, silt, rust, and residual chlorine before they reach the RO membrane (extending membrane life dramatically); second-stage RO membrane removes 99% of impurities and over 1,000 harmful contaminants including heavy metals, fluoride, arsenic, lead, PFAS/PFOS, pharmaceuticals, and dissolved solids; third-stage carbon polish removes any remaining taste compounds.
For households committed to RO-quality drinking water but unwilling to give up the under-sink storage space to a tank, this tankless design is the right purchase. The 3-stage system is the entry-level tankless in APEC’s lineup — pair with the ROCT-A1000 or ROCT-A1000ALK for the premium tankless versions. APEC Water Systems is designed, engineered, and assembled in the USA at their California facility.
