Comparison
CLEAR2O pitcher routines: gravity GRP200 or faucet-fed CWS100?
Start with the connection, not the brand name
CLEAR2O has documented two quite different pitcher routines. The current GRP200 is a six-glass gravity pitcher: pour cold water into its top reservoir, wait for it to drain through a GRF201 filter and pour from the lower vessel. The older CWS100 connects to a faucet through a quick-connect hose and uses tap pressure to filter into its pitcher. That old model is useful to identify if it is already on your counter, but its body does not appear in Clear2O’s current pitcher collection. The CWS100 manual and cartridge pages remain available; online support is not the same as proof of a current body offer.
These two routines need different kitchen checks. GRP200 needs open space above the pitcher to fill and enough time for gravity flow; the maker estimates roughly two to three minutes per full 48-ounce fill. It does not need an outlet, adapter or faucet clearance. CWS100 needs a compatible threaded aerator and a hose route to the pitcher. Its manual warns that a pull-out sprayer may not accept the adapter. A small faucet mismatch can make the faster claimed fill unusable, so check the fitting before choosing a faucet-connected system.
Match the replacement code to the exact body
GRP200 uses GRF201 (also sold as a single replacement) or GRF203 (a three-pack). CWS100 uses the CWF500 family; Clear2O names CWF501 and CWF503 for that earlier pitcher. The manufacturer’s CWF503 replacement listing also names several CWS100 letter-suffix model codes, but that alone does not tell you the exact body revision, package contents or current availability of each suffix. Read the label on an existing unit and its manual. Do not substitute a GRF filter merely because both products say Clear2O, and do not infer that an accessory adapter fits your faucet without checking the thread.
Filter life is another real difference. GRP200’s manual and FAQ specify 60 gallons; the manual says actual life can vary and recommends earlier replacement if flow slows. CWS100 is rated at 50 gallons, and the FAQ describes a roughly two-month routine. The two indicators have different thresholds: GRP200 stays green to 50 gallons then yellow for ten; the CWS100 green stage ends at 40 and its yellow stage covers the next ten. Both systems call for using the indicator and watching flow rather than assuming every household reaches the full rating.
Two older codes describe two other pitcher routines
The CWS100AW is an exact faucet-pressure code, not a synonym for every CWS100 suffix. A 2015 catalog gives both 1.75 liters and nine 8-ounce glasses for that model, which conflict; its exact vessel capacity is therefore uncertain. A separate all-model manual names CWS100AW with a legacy cartridge list and a detailed NSF/ANSI 42/53 performance sheet, including lead and Cryptosporidium-cyst test rows. Do not transfer that sheet to the newer CWF503 replacement without a performance crosswalk. Read the CWS100AW owner reference if that exact label is on your unit.
CAP350-BL (shown as CAP350BL on the later card) is different again: a top-fill alkaline pitcher using the five-stage CAF301 cartridge, which the maker rates at 80 gallons. The exact sources do not state its vessel capacity or a model-specific lead/cyst result. The maker’s pH/mineral wording is a feature claim, not a health outcome. See the CAP350-BL owner reference for the setup limits and what remains unknown. Neither older pitcher body appears in the checked current pitcher catalogue; a replacement-filter page is useful to existing owners but does not establish a current body offer or a recall.
Read contaminant claims in the exact sheet
The current GRP200 page links a sheet headed GRF200 Series. It marks Lead under “REDUCES,” but gives no percentage for that row. Clear2O’s older CWF500 sheet is headed for the filter family and uses a “PASSED” column without numerical reduction percentages. A checkmark on one sheet is not interchangeable with a listed reduction percentage on another, and neither should be read as a guarantee about untreated water. Both manuals are explicit that their pitchers are for cold potable water and are not a substitute for disinfection of an unsafe source.
If a documented lead result is the deciding need, compare a third, current option such as the PUR PLUS PPT711. Its exact assessment describes the included PPF951K filter, a seven-cup body and the maker’s specific test/certification statements; it has a smaller listed capacity and its own 40-gallon replacement routine. That is a different product and cartridge, not an upgrade kit for either Clear2O pitcher. Use the full exact performance record and the linked model review instead of deciding from a short marketing phrase.
A practical shortlist
For a straightforward current Clear2O pitcher without faucet work, open the GRP200 review and decide whether a six-glass batch and 60-gallon indicator fit your routine. For an existing hose-connected unit, read the CWS100 owner reference, find the exact label and confirm the connection and CWF500 cartridge. If neither the connection nor the claims fit, widen the search to current gravity or powered systems and compare their own manual, filter identity and performance sheet. A company’s current filter listing can help an owner, but it should not be mistaken for a current complete pitcher system.