Brandwave

How popular isUS Water Systems?

In September 2026, people searched for US Water Systems by name about 6,600 times worldwide, about the same as the previous year. These searches made up 1.9% of all global iron filter brand searches, placing US Water Systems fourth out of six brands. When we asked both ChatGPT and Google AI Overviews about iron filter brands, US Water Systems appeared in three of the five answers and was the fourth most recommended of the six.

Search and AI answers in September 2026

US Water Systems is the fourth most searched of 6 competitors and the fourth most recommended in AI answers.

  1. CulliganShare of searches 72.6%Mentioned in 0 of 5 AI answersPlace in AI recommendations –
  2. PentairShare of searches 14.6%Mentioned in 1 of 5 AI answersPlace in AI recommendations 5th
  3. iSpringShare of searches 9.8%Mentioned in 3 of 5 AI answersPlace in AI recommendations 3rd
  4. US Water SystemsShare of searches 1.9%Mentioned in 3 of 5 AI answersPlace in AI recommendations 4th
  5. SpringWellShare of searches 1.1%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st

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Top iron filter brands in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, US Water Systems was mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. US Water Systems is the fourth most recommended of the six.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. SpringWell1st
  2. SoftPro2nd
  3. iSpring3rd
  4. US Water Systems4th
  5. Pentair5th
  6. Culligan–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • SpringWell5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • SoftPro4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • iSpring3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • US Water Systems3 of 5Named in 3 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Pentair1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Culligan0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about iron filter brands

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 21, 2026.

Which iron filter brands compete with US Water Systems?

US Water Systems against iron filter brands worldwide, by month

Share of searches by month for Culligan, Pentair, iSpring, US Water Systems. The figures are in the table below the chart.

View monthly share of searches table
MonthCulliganPentairiSpringUS Water SystemsSpringWellSoftPro
Oct 202562.3%18.7%15.3%2.5%1.1%0.1%
Nov 202562.3%18.7%15.3%2.5%1.1%0.08%
Dec 202562%18.6%15.2%3%1.1%0.1%
Jan 202668.6%16.9%11.3%2.3%0.82%0.13%
Feb 202664.2%19.3%12.9%2.6%0.93%0.1%
Mar 202664.1%19.3%12.9%2.6%0.93%0.12%
Apr 202664.2%19.3%12.9%2.6%0.93%0.08%
May 202665.9%19.8%10.9%2.2%1.2%0.09%
Jun 202664.5%19.4%13%2.1%0.93%0.08%
Jul 202666%19.9%10.9%2.2%0.95%0.11%
Aug 202667.1%20.2%9%2.7%0.97%0.06%
Sep 202672.6%14.6%9.8%1.9%1.1%0.05%

  1. 1.Culligan

    72.6%

    Held 1st. 246K estimated branded searches, +22.4% vs prior month. Share +5.5 points.

  2. 2.Pentair

    14.6%

    Held 2nd. 49.5K estimated branded searches, -18.2% vs prior month. Share -5.6 points.

  3. 3.iSpring

    9.8%

    Held 3rd. 33.1K estimated branded searches, +22.1% vs prior month. Share +0.7 points.

  4. 4.US Water Systems

    1.9%

    Held 4th. 6.6K estimated branded searches, -18.5% vs prior month. Share -0.8 points.

  5. 5.SpringWell

    1.1%

    Held 5th. 3.6K estimated branded searches, +24.1% vs prior month. Share +0.1 points.

  6. 6.SoftPro

    0.05%

    Held 6th. 170 estimated branded searches, 0% vs prior month. Share 0 points.

Compare popularity between US Water Systems and its closest rivals

Every comparison with US Water Systems

5 comparisons

How has branded search demand for US Water Systems changed worldwide over the last 12 months?

3 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for US Water Systems worldwide held steady at 6.6K.
  • Across the 12 months ending September 2026, US Water Systems’ share of searches among iron filter brands worldwide decreased from 2.5% to 1.9%.
  • Across the 12 months ending September 2026, US Water Systems’ share of searches among iron filter brands worldwide peaked at 3% in December 2025 and was lowest at 1.9% in September 2026.

How did search popularity change for iron filter brands worldwide in September 2026?

6 changes

  1. In September 2026, Culligan gained share of searches among iron filter brands worldwide, from 67.1% to 72.6%.

  2. In September 2026, iSpring gained share of searches among iron filter brands worldwide, from 9% to 9.8%.

  3. In September 2026, Pentair lost share of searches among iron filter brands worldwide, from 20.2% to 14.6%.

  4. In September 2026, US Water Systems lost share of searches among iron filter brands worldwide, from 2.7% to 1.9%.

  5. Estimated monthly branded searches for SpringWell worldwide rose 24.1% over 12 measured months, from 2.9K to 3.6K in September 2026.

  6. Estimated monthly branded searches for SoftPro worldwide fell 34.6% over 12 measured months, from 260 to 170 in September 2026.

How are US Water Systems’ branded searches counted?

1 search term

Brandwave collects information about searches that people make online using US Water Systems’ name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.

  • us water systems

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How the Brand Demand Index is measured

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