Waterway Crystal Water 325 sq ft Cartridge Filter
Cheapest at 325, and it shows — The same four-element build as the majors at 325 sq ft, several hundred less — on the thinnest evidence of the three
Contender — The Best In-Ground Cartridge Pool Filters (2026): SwimClear vs Clean & Clear Plus vs Crystal Water
Specs
| Filter area | 325 sq ft |
| Elements | 4 (multi-element) |
| Pool type | In-ground |
| Warranty | Not stated on the listing — confirm with the seller |
Pros
- $474 under the Pentair CCP320 and $634 under the Hayward at the same nominal size
- Four cartridges, the same construction class as SwimClear and Clean & Clear Plus
- NSF certified, listed and sold through Waterway's own Amazon store
- No free-product reviews in the base — everything in it is a paying owner
Cons
- 3.8★ is the lowest score of the three filters at this size
- 22.6% of its reviews are critical — the highest rate in the roundup, against 2.7% on the Hayward
- The recurring complaint is leaks — at the lid, the band clamp and the release valve
- Its 425 sibling has a critical tail that is almost entirely the tank cracking at two to three years
- 31 ratings is a third of the Pentair's base and a sixth of the Hayward's
Leaks at the lid, band clamp and pressure-relief valve
7 of 31 ratings are critical (22.6%), the highest rate in the roundup; four of the seven describe leaks at the lid, band clamp or relief valve · critical reviews read August 2026
“Box was very damaged, belt clamp was damaged.”— rene jacobo, Amazon · Verified owner
FAQ
Who is the Waterway Crystal Water 325 sq ft Cartridge Filter for?
You want four-cartridge construction at 325 sq ft and the $474 you save against the Pentair matters more to you than the depth of the owner record behind it.
What do owners say about the Waterway Crystal Water 325 sq ft Cartridge Filter?
3.8★ across 31 owner ratings (Amazon, read August 2026 · early data). What owners complain about: Leaks at the lid, band clamp and pressure-relief valve
What is the warranty on the Waterway Crystal Water 325 sq ft Cartridge Filter?
Waterway publishes no warranty term for the Waterway Crystal Water 325 sq ft Cartridge Filter — we looked for one from the maker and record the absence rather than guess. Buy it somewhere with a return window you trust.
✓ Safety: no active recall — No CPSC recall has ever been issued for a Waterway filter (database read 2026-08-26, 9,966 records). Waterway's three recalls are all pool and spa DRAIN covers — 2011 and 2014, a different product line. Pressure vessel: stop the pump and bleed the air relief before opening the band clamp.
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Data last verified: August 2026. Ratings are real, dated reads — never scraped or invented. Full methodology and monetization disclosure: how we test.