APEC Ultimate RO-90
Listings checked Oct. 9, 2026
Certified to
- NSF/ANSI 58WQA listingchecked Oct. 9, 2026
Certified for: Lead, Copper, Arsenic, Chromium (total), Fluoride
Maker’s list price
$265
as of Oct. 9, 2026
Each replacement, at list price
- Pre-filter set, stages 1 to 3 (FILTER-SET)
- $45
- RO membrane (MEM-90)
- $79
- Carbon post-filter (5-TCR-QC)
- $25
Five years, household of 3
$549
10¢ per gallon
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List price from the maker’s site, checked Oct. 9, 2026. Prices change; the maker’s page is the final word.
What the listings say
| Standard | Certifier | Claims | Listing |
|---|---|---|---|
| NSF/ANSI 58 | WQA | Arsenic (V) (300 ppb influent level); Barium; Cadmium; Copper; Fluoride; Hexavalent Chromium; Lead; Radium 226/228; Selenium; TDS; Trivalent Chromium; Turbidity | Read the listing checked Oct. 9, 2026 |
Certified for, and claimed
Certified, by a listing
Claimed by the maker only
None recorded.
What it costs over five years
Household of 3, 3 gallons a day of drinking and cooking water. Installation not included.
| Item | Replaced | Count | Amount |
|---|---|---|---|
| System, with first media | — | 1 | $265 |
| Pre-filter set, stages 1 to 3 (FILTER-SET) | Every 12 monthsmonth rating | 4 | $180 |
| RO membrane (MEM-90) | Every 3 yearsmonth rating | 1 | $79 |
| Carbon post-filter (5-TCR-QC) | Every 3 yearsmonth rating | 1 | $25 |
Five-year total$549
Per gallon10¢
Worth knowing
With a storage tank. APEC shows $264.99 as a sale price with no regular price. The manual says pre-filters every 12 months and the membrane and post-filter every 3 to 5 years on city water; the shorter figures are recorded. APEC publishes no gallon ratings or waste ratio.
Where to go next
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- Your household’s costThe five-year cost at your own household size and daily use.Run it for your household
- NSF/ANSI 58, decodedWhat a NSF/ANSI 58 listing does and does not promise.About NSF/ANSI 58
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