Startup idea
Local Tap Water Quality Directory
A consumer-facing directory that simplifies complex public water quality reports into actionable health insights, monetizing through affiliate sales of water filtration systems.
Opportunity5.8
Why now
Increased public concern over water contaminants (PFAS, lead) and better access to open-source data interpretation tools.
Market gap
Government data is opaque and difficult to search; existing solutions don't bridge the gap to immediate purchases (filters) as effectively.
Business fit
- Type
- Affiliate Directory
- Target
- Health-conscious homeowners, especially parents.
- Revenue
- $5k-$15k/month (via Mediavine and Affiliates)
- Founder
- Founders skilled in data scraping and affiliate SEO.
Scores
- Problem
- 7.0
- Feasibility
- 8.0
- Why now
- 7.0
- Go-to-market
- 5.0
- Confidence
- 10.0
Proof signals
- Case study: Andy reached 40k monthly visitors and Mediavine acceptance within a year with zero backlinks.
- Water filters are a high-conversion affiliate category.
Keyword demand
| Keyword | Volume | Growth |
|---|---|---|
| water quality by zip code | 720/mo | -33% YoY |
US English Google Ads volume from DataForSEO; growth uses returned monthly search history.
Source episode
Claude Code built me a $273/Day online directory41:05
Andy in our community built a tap water quality directory... getting over 40,000 monthly visitors... Selling like water filters through Amazon affiliate.
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