Waterwhelm
PrivateLast Round
Grant
Jun 27, 2025
Total Funding Raised
$4.34M
Company Overview
Waterwhelm is a water technology company that develops and commercializes forward osmosis systems for wastewater treatment and desalination powered by waste heat.
Sector
Energy & Sustainability
Verticals
Water Treatment, Circular Economy, Clean Manufacturing
Business Model
B2B
Customer Profile
Services & Consulting, Government Contracts
AI Layer
Non-AI
Keywords
Historical Pricing
Historical view of private secondary pricing and transaction trends.
Waterwhelm Comparables
Compare Waterwhelm with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Trevi Systems | 84% | |
| SideStroem Water Technologies | 79% | |
| Oasys Water | 79% | |
Waterwhelm Funding Rounds
Historical fundraising activity
| Round | Date | Amount Raised | Valuation | Investors | Sources |
|---|---|---|---|---|---|
| Grant | Jun 27, 2025 | ||||
| Accelerator | Oct 1, 2024 | ||||
| Grant | Jan 24, 2024 | ||||
| Grant | Dec 18, 2023 | ||||
| Grant | May 11, 2023 | ||||
Accelerator | Feb 15, 2023 |
Waterwhelm Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Net Zero Technology Centre | Accelerator |
| Converge Challenge | Grant |
| Scottish EDGE | Grant |
| Innovate UK | Grant |
| University of Bath | Grant |
| Katapult Ocean | Accelerator |
| Scottish Investment Bank (Scottish Enterprise) | Grant |
Market signals
Structured signals derived from secondary market and firmographic data.
- Apr 9, 2026
Grew 19% QoQ, from 16 to 19 employees.
- Apr 8, 2026
Monthly visitors increased 593% MoM.
Waterwhelm Filings
SEC and related filings with document metadata.
| Typed | Date | Amount Offered | Amount Sold | Filling | Pages | Download |
|---|---|---|---|---|---|---|
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Frequently Asked Questions
Common questions about Waterwhelm's valuation, stock price, and market status.