Which removes fluoride?

Both do, but the ProPur includes fluoride reduction in its all-in-one filter. The Waterdrop needs its separate fluoride filter, rated up to 1,000 gallons per pair.

Which has cheaper filters over time?

The Waterdrop's carbon pair is rated up to 6,000 gallons, while the ProPur filter is rated for about 6 months. For a busy household the Waterdrop likely costs less per gallon, but check current filter prices before deciding.

Which is better for a family of four?

The ProPur, mainly for its 3-gallon capacity and its ability to take up to three filters. The Waterdrop's 2.25 gallons means more refills.

Can I use either on untreated water?

ProPur states its system works with lake, river, stream, pond and rain water. Waterdrop does not state that, so treat it as a tap-water system.

Is the Waterdrop worth $10 more?

Only if long filter life matters more than capacity and included fluoride reduction. At $239.99 versus $229.95 as of November 6, 2026, the gap is small.

ProPur ProOne Big+ Gravity Water Filter vs Waterdrop King Tank

Both are gravity-fed stainless steel systems with no electricity, and their best prices are close: $229.95 for the ProPur ProOne Big+ at Amazon and $239.99 for the Waterdrop King Tank at Amazon, both as of November 6, 2026. Pick the ProPur if you want fluoride removal in the included filter and a body that can grow to three filters. Pick the Waterdrop if long filter life and a bigger tank matter more, and you are fine buying the fluoride filter separately. Neither is a good fit if you want fast flow or a plumbed-in system.

Today the ProPur ProOne Big+ Gravity Water Filter costs $10.04 less at its best price.

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