APEC Water ROES-50, 5-Stage Under Sink Reverse Osmosis System, 50 GPD | NSF Certified 372 & 58, Reduces 99% of Impurities, DIY Installation

Certifier record checked 23 Oct 2026 · source

“WQA Gold Seal product directory (find.wqa.org, keyword "APEC"), read in a browser 2026-10-23. Under APEC Water Systems, NSF/ANSI 58 (reverse osmosis), model ROES-50 is listed (Systems with Storage Tank and Automatic Shut-off Valve) with one reduction claim: TDS. The same listing gives other APEC models (for example RO-90) a longer claim list including lead, so the short list is specific to this model. APEC's own page (apecwater.com, "ROES-50", read the same day) says "WQA Gold Seal Certified System" and "tested for TDS reduction". IAPMO R&T lists APEC files for lead-free materials (W-13983 and WP-17574, SDWA 1417(d) and NSF/ANSI/CAN 372) and one RO file (WC-29791, NSF/ANSI 58-2024) for a different model (ROTL-A1000); ROES-50 is not named on those. WQA also lists ROES-50 under NSF/ANSI/CAN 372 (lead content of the materials), which supports the Amazon title's "372 & 58"; 372 is about the system's own parts, not a claim that it removes lead. Second review, 2026-10-23: APEC's ROES-50 page (apecwater.com/products/roes-50, read the same day) states, for the 4th stage membrane, "Removes a wide variety of contaminants including arsenic, bacteria, lead, fluoride, chromium, radium and more" and its contaminant list ticks "Lead". That is a manufacturer claim; the WQA listing for this model names TDS only.”