PUR vs Waterdrop:Which is more popular?
In September 2026, Waterdrop had more branded searches than PUR among water filter brands worldwide. Waterdrop had about 41,700 branded searches, while PUR had 720. Waterdrop made up 10% of all water filter brand searches we track, and PUR accounted for 0.17%. When we asked ChatGPT and Google AI Overviews about water filter brands, PUR and Waterdrop each appeared in two of the five answers. Waterdrop was mentioned before PUR in two out of three answers that named either.
Who do people search for more?
Waterdrop, about 58 searches for every 1 for PUR
Who does AI mention more?
Both were mentioned in 2 of 5 answers.
Who does AI recommend more?
Waterdrop, named ahead of PUR in 2 of 3 answers
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Top water filter brands in ChatGPT and Google AI Overviews
In three ChatGPT questions and two Google AI Overviews, PUR was mentioned in two out of five: in two of the three ChatGPT answers, but not in either of the two Google AI Overviews. Waterdrop was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Waterdrop was listed before PUR in two out of three answers that named either.
Most recommended by AI
Brands get a higher ranking if they are mentioned earlier in the answers.
Mentioned by AI
Each dot is one answer, filled in when that answer mentions the brand.
Brita5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers- Aquasana3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- APEC Water Systems3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
- Waterdrop2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
PUR2 of 5Named in 2 of 3 ChatGPT answersNamed in 0 of 2 Google answers
BWT0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Puretec0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
Philips0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
See every answer about water filter brands
5 answers
Asked ChatGPT
“Which water filter brand should I buy?”
Asked ChatGPT
“What are the best water filter brands?”
Asked ChatGPT
“What's the best water filter brand for clean drinking water?”
Searched Google, AI Overview
“water filters for home”
Searched Google, AI Overview
“pitcher water filter”
Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.
Is PUR or Waterdrop more popular in search?
This chart shows how often people search Google for PUR and Waterdrop by name. Each line represents a brand's share of searches for all eight water filter brands we track, month by month, from English-language searches worldwide.
Share of searches by month for Waterdrop, PUR. The figures are in the table below the chart.
View monthly share of searches table
| Month | Brita | BWT | Waterdrop | Aquasana | Puretec | APEC Water Systems | Philips | PUR |
|---|---|---|---|---|---|---|---|---|
| Oct 2025 | 47.9% | 26.2% | 9.9% | 7.9% | 3.7% | 2.4% | 1.9% | 0.21% |
| Nov 2025 | 47.6% | 26% | 9.8% | 7.8% | 3.9% | 2.3% | 2.3% | 0.17% |
| Dec 2025 | 50.4% | 22.7% | 10.5% | 8.3% | 3.4% | 2.5% | 2% | 0.18% |
| Jan 2026 | 45.7% | 25% | 11.5% | 9.2% | 3.8% | 2.3% | 2.3% | 0.16% |
| Feb 2026 | 45.4% | 24.9% | 11.4% | 9.1% | 4.1% | 2.7% | 2.2% | 0.16% |
| Mar 2026 | 47.8% | 26.2% | 9.9% | 7.9% | 3.9% | 2.4% | 1.9% | 0.17% |
| Apr 2026 | 50.2% | 22.6% | 10.4% | 8.3% | 3.8% | 2.5% | 2% | 0.18% |
| May 2026 | 45.1% | 30.3% | 9.3% | 7.4% | 3.7% | 2.2% | 1.8% | 0.16% |
| Jun 2026 | 48.6% | 26.6% | 10.1% | 6.6% | 3.6% | 2.4% | 2% | 0.17% |
| Jul 2026 | 51% | 23% | 10.5% | 6.9% | 3.9% | 2.5% | 2.1% | 0.22% |
| Aug 2026 | 54.9% | 20.2% | 9.3% | 7.4% | 3.6% | 2.2% | 2.2% | 0.22% |
| Sep 2026 | 48.4% | 26.5% | 10% | 6.5% | 3.6% | 2.4% | 2.4% | 0.17% |
How has the PUR and Waterdrop comparison changed over the last 12 months?
3 findings
- Waterdrop was ahead of PUR in every measured month of the 12 months ending September 2026.
- Across the 12 months ending September 2026, PUR’s share of searches among water filter brands worldwide moved from 0.21% to 0.17%, and its estimated monthly branded searches moved from 880 to 720.
- Across the 12 months ending September 2026, Waterdrop’s share of searches among water filter brands worldwide moved from 9.9% to 10%, and its estimated monthly branded searches moved from 41.5K to 41.7K.
How did search popularity change for water filter brands worldwide in September 2026?
2 changes
In September 2026, Waterdrop gained share of searches among water filter brands worldwide, from 9.3% to 10%.
Estimated monthly branded searches for PUR worldwide fell 18.2% over 12 measured months, from 880 to 720 in September 2026.
How are branded searches counted?
5 search terms
Brandwave collects information about searches that people make online using PUR’s and Waterdrop’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.
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