The APEC ROCT-A1000 is APEC Water’s tankless reverse osmosis system — the premium under-sink RO solution that delivers bottled-water-quality drinking water without the bulky storage tank that traditional RO systems require. NSF 372 and 58 certified by IAPMO independent testing for filtration effectiveness across more than 1,000 impurities, including TDS, Lead, Arsenic, Radium, Chlorine, Chromium, and PFAS/PFOS compounds.
The 3-stage filtration sequence uses a 2:1 pure-to-drain water ratio — meaning the system wastes significantly less water than competing RO systems (typical RO is 3:1 or 4:1 waste-to-pure). At 1,000 GPD (gallons per day) capacity, the system fills a 16 oz cup in under 6 seconds — fast enough for normal household drinking water use without the lag traditional RO systems impose. The compact tankless design fits under most kitchen sinks where bulky tank RO systems don’t.
Front-facing filter housings mean cartridge changes are quick and easy — no contorting under the sink to reach hidden filter positions. Includes guided instructional videos from APEC for installation. For households committed to RO-quality drinking water (the gold standard for residential water filtration), this is the right premium purchase. APEC Water Systems manufactures in Fountain Valley, California. Made in USA.






