Category AI Visibility Report
Under Sink Water Filters AI Visibility Report 2026: Top Brands & Buyer Topics in AI Search
Data updated 2026-08-27 · 30-day window · ChatGPT · Google AI Mode · Google AI Overviews
≈22,434
Est. AI queries / month
21
Buyer topics monitored
10
Brands on the AI shelf
Key insights
- Over the last 30 days, GEOly monitored 21 buyer topics in Under Sink Water Filters across ChatGPT, Google AI Mode, Google AI Overviews — an estimated 22,434 AI queries per month.
- Aquasana leads the AI shelf with 18.3% of brand mentions, followed by ISPRING (14.8%) and Waterdrop (13.3%). The top three hold 46.4% combined — a concentrated shelf where challengers need a differentiated topic wedge.
- The highest-demand topic is “best under sink water filters” (top keyword “best under the sink water filters”, ~8,100 searches/mo).
- AI answers lean on nsf.org most (14.9% of citations) — earning presence on these sources is the shortest path to being recommended.
Brands AI recommends most
Share of brand mentions across AI answers in the last 30 days (Share of Model).
| # | Brand | AI mentions | Share |
|---|---|---|---|
| 1 | Aquasana | 1,421 | 18.3% |
| 2 | ISPRING | 1,152 | 14.8% |
| 3 | Waterdrop | 1,031 | 13.3% |
| 4 | APEC Water | 906 | 11.6% |
| 5 | Culligan | 217 | 2.8% |
| 6 | Frizzlife | 200 | 2.6% |
| 7 | Hydroviv | 158 | 2% |
| 8 | H2oLabs | 151 | 1.9% |
| 9 | CuZn | 150 | 1.9% |
| 10 | AquaTru | 131 | 1.7% |
What shoppers ask AI
Buyer topics monitored in this category, with estimated monthly AI queries and the top Google keyword behind each topic.
| Topic | Est. AI queries / mo | Top keyword | Search volume / mo |
|---|---|---|---|
| best under sink water filters | ≈5,112 | best under the sink water filters | 8,100 |
| under sink water filters for pfas | ≈5,112 | water filters for pfas | 8,100 |
| under sink water filters reviews | ≈4,150 | best under-sink water filter consumer reports | 880 |
| NSF certified under sink water filters | ≈4,052 | nsf certified water filter | 8,100 |
| under sink water filter replacement | ≈4,008 | replacement under sink water filters | 1,300 |
| rainwater filters | — | — | — |
| water filter replacement cartridges | — | water filter replacement | 12,100 |
| under sink water filters without separate faucet | — | under sink water filter | 60,500 |
| under sink water filters for PFAS removal | — | water filters for pfas | 8,100 |
| under sink water filters for lead removal | — | lead filter for water | 14,800 |
| kitchen sink water filters | — | water filter for sink faucet | 8,100 |
| under sink water filters for well water | — | well water filtration system | 60,500 |
| whole house water filtration systems | — | whole house reverse osmosis system | 22,200 |
| under sink water filters for hard water | — | hard water filter | 9,900 |
| water distillers | — | water distiller | 12,100 |
| portable water filters | — | — | — |
Sources AI cites in this category
Root domains AI engines cited most when answering category queries in the last 30 days.
| Domain | Citations | Share |
|---|---|---|
| nsf.org | 174 | 14.9% |
| reddit.com | 160 | 13.7% |
| goodhousekeeping.com | 155 | 13.3% |
| consumerreports.org | 132 | 11.3% |
| epa.gov | 114 | 9.8% |
| bobvila.com | 69 | 5.9% |
| tapwaterdata.com | 63 | 5.4% |
| aquasana.com | 58 | 5% |
FAQ
Which brands do AI assistants recommend most for under sink water filters?
Over the last 30 days the top brands by AI mention share are: Aquasana (18.3%), ISPRING (14.8%), Waterdrop (13.3%), APEC Water (11.6%), Culligan (2.8%). Data from GEOly's continuous monitoring across ChatGPT, Google AI Mode, Google AI Overviews.
How many people ask AI about under sink water filters?
GEOly estimates ~22,434 AI queries per month in this category across 21 buyer topics, led by “best under sink water filters”.
Which sources do AI engines cite for under sink water filters?
The most-cited domains are: nsf.org, reddit.com, goodhousekeeping.com, consumerreports.org, epa.gov. Building brand presence on these sources is the most direct way to win AI recommendations.
Methodology
GEOly continuously runs category buyer prompts across ChatGPT, Google AI Mode, Google AI Overviews and records which brands are mentioned and which sources are cited. Figures aggregate a 30-day window; AI query volumes are modeled estimates from keyword demand and AI-adoption share. Data: GEOly MCP Server, updated 2026-08-27.
See your brand inside this category
GEOly tracks how ChatGPT, Google AI Mode and Google AI Overviews mention, rank and cite your brand against every competitor above — and what to fix to win the AI shelf.