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Here’s a detailed overview of APEC Water Systems, often just called APEC Water:

 1. About the Brand

APEC stands for Advanced Purification Engineering Corp., headquartered in California. It is a U.S.-based manufacturer designing and assembling reverse‑osmosis (RO) and whole‑house filtration systems with over 20 years of experience. While some parts are produced overseas, primary filters and quality checks happen in the U.S.

2. Product Lineup & Certifications

APEC specializes in high-performance filtration systems:

  • Essence Series – under-sink RO units like ROES‑50 (50 GPD, 5-stage)

  • Ultimate Series, Tankless, and Countertop Series for varying needs
    They are WQA Gold Seal certified to NSF/ANSI 58 standards for contaminant removal.

3. Performance Highlights

APEC ROES‑50 (Essence Series)

  • Rated #5 in TechGearLab’s top filters ranking. Scores high (9.9/10) on contaminant removal, especially lead, fluoride, chlorine, iron, copper. Taste scoring is strong too. Installation is DIY-friendly, though it wastes more water (approx. 3 gallons wastewater per gallon purified). Replacement filters are moderately priced and typically changed every 6–12 months.

APEC WFS‑1000 (No-tank under-sink model)

  • Reviewed by the same site and ranked #6. Particularly effective at removing fluoride, lead, copper, chlorine—but less capable with sulfates/iron, and it’s not as thorough as RO systems. Setup is simpler (no tank), and operating costs around $40/year make it economical. Overall taste is crisp and refreshing.

What People Like

  • Users on forums like Reddit often describe APEC systems as easy to install, efficient, and producing great-tasting water. For example, ROES‑50 offers crystal-clear water akin to bottled quality, with quiet operation and DIY-friendly maintenance.

  • The ROES-PH75 (alkaline version) adds minerals back into the water, creating high-quality tasting water—though installation takes longer and filters cost more.

  • Reddit threads praise TDS reduction (e.g. down to ~17 ppm), indicating excellent purification performance on hard water lines.

Issues Reported

  • Some users note rusting fasteners in units like PH75 due to water exposure—suggesting better hardware could be used.

  • Complaints include wasted water, which is typical of RO systems (especially earlier models), and occasional leaks or plastic taste in early configurations.

  • A few report decline in filter performance after 1–2 years, or diminished taste, often resolved via replacing old filters.

5. Company & Support Reviews

  • Trustpilot feedback is mixed: some customers praise APEC’s reliability and U.S.-based service, while others cite delayed filter orders or difficulty getting support. That said, APEC’s support often responds proactively to resolve issues.

Final Verdict

APEC Water is a trusted American brand offering robust filtration with long-lasting build quality and reliable customer support. Particularly strong in eliminating major contaminants and improving tap water taste, it’s ideal for households seeking long-term purification solutions.

Best For:

  • Side-users comfortable with DIY installation

  • Those wanting high contaminant removal, including fluoride and lead

  • Customers prioritizing U.S. design and supported after-sales service

Less Suitable If:

  • You need low-waste systems or whole-house filtration without water loss

  • You dislike under-sink equipment taking up space

Would you like help picking the right model for your water quality, comparing APEC systems to alternatives like iSpring or Waterdrop, or checking compatibility with specific local contaminants? Let me know!