Cat water fountains · Choose by your needs
If you want no plug and no pump, choose a gravity-fed bowl rather than a rechargeable fountain. PetSafe's Healthy Pet Water Station Small, Medium and Large use the same basic stainless-bowl/plastic-reservoir layout, with 0.5-, 1- and 2.5-gallon tanks. The two gravity answers ask different things—no electrical supply and no active circulation—but the same Water Station family satisfies both in this refill workflow. The larger size stores more water but also takes a two-hand lift, invert-and-lock refill; none circulates a stream.
Comparison updated 29 October 2026.
| Model | Size/model | Nominal reservoir | Refill and care tradeoff |
|---|---|---|---|
| PetSafe Healthy Pet Water Station Small (0.5 gal) PFD17-11854 | Small PFD17-11854 | 0.5 US gal; maker rounds to 2 L | Smallest tank to carry; still requires regular checks, cleaning and correct valve setup. |
| PetSafe Healthy Pet Water Station Medium (1 gal) PFD17-11855 | Medium PFD17-11855 | 1 US gal; maker rounds to 4 L | More stored water; reservoir must be removed, filled, inverted and locked with two hands. |
| PetSafe Healthy Pet Water Station Large (2.5 gal) PFD17-11856 | Large PFD17-11856 | 2.5 US gal; maker rounds to 9.5 L | Largest listed tank; use its two-hand fill/turn routine and keep the bowl clean. |
Choose it when: The exact Small model uses a gravity valve to refill its removable stainless bowl from a 0.5-gallon plastic reservoir, without a pump or electricity.
The limit: The smallest stored supply may require more frequent checking in a high-use household. Its nominal capacity is not a measured usable volume or a schedule for leaving water unattended.
Choose it when: The Medium retains the same mechanical gravity-bowl workflow with a one-gallon reservoir, useful when the Small's half-gallon tank is not the preferred size.
The limit: The larger tank is heavier to handle and does not eliminate washing or refill checks. It still offers no pump circulation, app records or low-water shutdown.
Choose it when: The exact Large is the only documented gravity station whose operating-plan reservoir reaches the 8 L high-volume threshold; the stainless bowl refills by a mechanical valve.
The limit: It is the largest tank to lift and lock, and no-plug gravity replenishment is not circulating water. Capacity alone does not promise days between checks.
These stations use no powered pump; the valve lets reservoir water refill the bowl as the bowl empties. If you need water to circulate or respond to a pet, choose a fountain with an outlet or rechargeable operating plan instead. The three sizes are the same kind of task, not three different powered features.
The bowl and reservoir need regular washing and refill checks. Follow the exact cleaning instructions, including the optional cartridge's care or replacement, and handle the filled tank securely. A stored-water volume is not a safe unattended duration.
No. PFD17-11856 refills by gravity and uses no electric pump. Its 9.5 L rounded chart capacity is a reservoir label, not a rechargeable water-flow mode.
No. The bowl is replenished as water is used; there is no active stream. That is why gravity refill and continuous circulation are separate answers.
Choose based on the reservoir you can lift, refill and clean. Small is 0.5 gallon, Medium is 1 gallon and Large is 2.5 gallons; none removes the need to inspect the bowl and water.
