--- title: "Castle Water vs Water Plus: Which is searched more in the United Kingdom?" description: "Is Castle Water or Water Plus more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Business water suppliers set in the United Kingdom. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/uk/compare/castle-water-vs-water-plus" publisher: "Brandwave" --- # Castle Water vs Water Plus: Which is searched more in the United Kingdom? Is Castle Water or Water Plus more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Business water suppliers set in the United Kingdom. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Castle Water and Water Plus - **Competitive set**: Business water suppliers - **Market**: United Kingdom - **Month measured**: Sep 2026 - **Castle Water Share of Search**: 28.4% - **Water Plus Share of Search**: 42.5% ## Is Castle Water or Water Plus more popular in search? - In September 2026, Water Plus had more branded searches than Castle Water among business water suppliers in the United Kingdom. Water Plus had about 27,100 branded searches, while Castle Water had 18,100. Water Plus made up 42.5% of all business water supplier searches we track, and Castle Water accounted for 28.4%. - Water Plus was ahead of Castle Water in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Castle Water’s share of searches among business water suppliers in the United Kingdom moved from 28.3% to 28.4%, and its estimated monthly branded searches held steady at 18.1K. - Across the 12 months ending September 2026, Water Plus’ share of searches among business water suppliers in the United Kingdom moved from 42.3% to 42.5%, and its estimated monthly branded searches held steady at 27.1K. ## Top business water suppliers in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Castle Water was mentioned in three out of five: in one of the three ChatGPT answers and in both Google AI Overviews. Water Plus was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Castle Water was listed before Water Plus in two out of three answers that named either. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | Source for Business | 1st | 2 of 3 | 0 of 2 | 2 of 5 | | Everflow | 2nd | 0 of 3 | 2 of 2 | 2 of 5 | | Castle Water | 3rd | 1 of 3 | 2 of 2 | 3 of 5 | | Water Plus | 4th | 1 of 3 | 1 of 2 | 2 of 5 | | Wave | 4th | 2 of 3 | 0 of 2 | 2 of 5 | | Business Stream | 6th | 0 of 3 | 2 of 2 | 2 of 5 | | Waterscan | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about business water suppliers - Asked ChatGPT "What's the best business water supplier in the UK?": 1. Source for Business, 2. Wave - Asked ChatGPT "Can a small business switch water supplier in England, and is it worth it?": named none of the brands we track - Asked ChatGPT "Which business water retailers have the best customer service?": 1. Source for Business, 2. Wave, 3. Castle Water, 4. Water Plus - Searched Google, AI Overview "business water suppliers": 1. Water Plus, 2. Everflow, 3. Business Stream, 4. Castle Water - Searched Google, AI Overview "business water": 1. Everflow, 2. Castle Water, 3. Business Stream Not named in any answer: Waterscan. Brands are listed in the order each answer named them. The answers were collected in United Kingdom on October 28, 2026. ## How did search popularity change for United Kingdom business water suppliers in September 2026? - In September 2026, Water Plus gained share of searches among business water suppliers in the United Kingdom, from 40.4% to 42.5%. - In September 2026, Castle Water gained share of searches among business water suppliers in the United Kingdom, from 27% to 28.4%. ## Month by month | Month | Castle Water estimated searches | Castle Water Share of Search | Castle Water rank | Water Plus estimated searches | Water Plus Share of Search | Water Plus rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 18.1K | 28.3% | 2 | 27.1K | 42.3% | 1 | | Nov 2025 | 18.1K | 29.4% | 2 | 27.1K | 44.1% | 1 | | Dec 2025 | 14.8K | 28.8% | 2 | 22.2K | 43.1% | 1 | | Jan 2026 | 18.1K | 28.3% | 2 | 27.1K | 42.3% | 1 | | Feb 2026 | 18.1K | 28.3% | 2 | 27.1K | 42.3% | 1 | | Mar 2026 | 22.2K | 28.7% | 2 | 33.1K | 42.9% | 1 | | Apr 2026 | 18.1K | 28.6% | 2 | 27.1K | 42.8% | 1 | | May 2026 | 18.1K | 28.7% | 2 | 27.1K | 43% | 1 | | Jun 2026 | 18.1K | 28.4% | 2 | 27.1K | 42.6% | 1 | | Jul 2026 | 18.1K | 28.4% | 2 | 27.1K | 42.6% | 1 | | Aug 2026 | 14.8K | 27% | 2 | 22.2K | 40.4% | 1 | | Sep 2026 | 18.1K | 28.4% | 2 | 27.1K | 42.5% | 1 | ## How each brand is measured Brandwave collects information about searches that people make online using Castle Water’s and Water Plus’ 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. - **Castle Water**: Measured on the search term “castle water”. - **Water Plus**: Measured on the search term “water plus”. - [Castle Water profile](/demand/uk/brands/castle-water) - [Water Plus profile](/demand/uk/brands/water-plus) - [All business water suppliers in the United Kingdom](/demand/uk/categories/uk-business-water-suppliers): The set both shares are measured inside, 7 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Castle Water or Water Plus more popular in search? In September 2026, Water Plus had more branded searches than Castle Water among business water suppliers in the United Kingdom. Water Plus had about 27,100 branded searches, while Castle Water had 18,100. Water Plus made up 42.5% of all business water supplier searches we track, and Castle Water accounted for 28.4%. ## Cite this page Brandwave. "Castle Water vs Water Plus: Which is searched more in the United Kingdom?". https://gobrandwave.com/demand/uk/compare/castle-water-vs-water-plus This page is also available as HTML at https://gobrandwave.com/demand/uk/compare/castle-water-vs-water-plus. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.