The APEC ROES-PH75 is a six-stage, tank-based under-sink reverse osmosis system rated at 75 gallons per day, with a 4-gallon tank, a dedicated chrome faucet and a final calcite remineralisation stage. Water Filter Guru scored it 8.87/10 after lab testing showed it removed every contaminant found above health guideline levels and cut dissolved solids by 93%, though its measured output and water efficiency were well short of APEC's figures. Bob Vila named it best overall, with its tester reporting clearer, better-tasting water from the first day in a home on hard municipal water. It suits households that want thorough, low-cost purification and have cabinet space to spare; anyone short on under-sink room, or keen to limit wastewater, should look at a tankless or pumped system instead.
- — Removed every contaminant detected above health guideline levels in Water Filter Guru's lab test
- — Cut total dissolved solids by 93%, from 875 to 54 ppm, with no significant TDS creep
- — Calcite remineralisation stage kept the filtered water from turning acidic
- — Wasteful without a pump: 10.6 oz sent to drain per 1 oz purified on a small draw
- — Installation took 90 minutes and needs a dedicated faucet hole drilled in the countertop
- — The 4-gallon storage tank fills much of the under-sink cabinet
