Veken Innovation Award Winner Stainless Steel Cat Water Fountain, 108 oz (C2)
A plug-in 3.2 L fountain with a 304 stainless steel tray and top-access filter; the listing says its seven parts snap apart without tools.
PETLIBRO
A battery-powered 3 L fountain with a stainless steel tray, a pump-free design and an app that tracks how much one pet drinks.
People who want to place a fountain away from a socket, or who want drinking data to share with a vet.
People who do not want an app, battery charging, or a recurring filter replacement: the maker recommends a new filter about every two weeks, and intake tracking is for one pet at a time.
The Amazon listing and maker page describe a 3 L detachable tank, pump-free water tank, stainless steel tray, four-layer filter and app tracking for one pet. The maker advertises up to 30 days per charge only under its stated single-pet, sensor-activated mode; actual runtime will vary with use. The two-week filter interval is the maker's recommendation. We have not tested this fountain.

Slime builds up in every recirculating fountain. Here is a five-step weekly routine, the filter schedules the makers publish, and a six-slide carousel you can post.

A 45-second comparison video that answers the one question cat owners ask after the purchase: how much work is it to keep clean? Shot list, caption and facts included.
A plug-in 3.2 L fountain with a 304 stainless steel tray and top-access filter; the listing says its seven parts snap apart without tools.