Spec-by-spec
Head to head
Contenders from Automatic Pet Water Fountains, every metric lined up. The winning value in each row is outlined.
PetSafe Multi-Tier Pet Fountain 100oz – Accessible Two-Height Waterer for Senior Pets #3 in Automatic Pet Water Fountains 
Catit Flower Fountain 3L with Triple-Action Filter — 100oz Cat Water Fountain #12 in Automatic Pet Water Fountains Price
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Rating
★★★★★
★★★★★
Category rank
#3
#12
Filtration Quality
—
Triple-action carbon + foam filter
Reservoir Capacity
100oz – ample for 1–2 pets, 2–3 days typical
3L / 100oz, ample for 1-2 cats
Pump Noise
—
Quiet, can increase with low water
Ease of Cleaning
Top-rack dishwasher-safe; moderate assembly required
Multiple small parts, hand wash only
Verdict
Best multi-tier fountain for senior & arthritic pets
Best-loved cat fountain for picky drinkers
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