Key facts
- Waterwhelm’s last known valuation is $9.7M (Mar 2025).
- It has raised $1.8M across 1 recorded rounds; the latest was Seed Round ($1.1M) in Mar 2025.
- Notable investors include Innovate UK, UK Research and Innovation, Katapult Ocean, Remove (Netherlands), Dunelm Energy — 11 tracked in total.
- Waterwhelm has filed 1 Form D with the SEC, most recently Mar 2025 ($1.1M sold to 1 investors).
- Status: Privately Held (backing).
- ·Post-money valuations for all 1 rounds
- ·The complete investor list — 11 names
- ·Watchlist + deal alerts for Waterwhelm
Funding rounds
1 roundsAbout Waterwhelm
Developer of a self-sustaining wastewater treatment system designed to generate electricity or biodiesel. The company offers technology for self-powered wastewater treatment that uses sewage to create freshwater, renewable energy, and fertilizer, enabling customers to use recovered sludge water for effective transportation and water management.
- Sector
- Energy
- HQ
- Edinburgh, United Kingdom
- Founded
- 2018
- Employees
- 17
- Website
- waterwhelm.com/
- Ownership
- Privately Held (backing)
Waterwhelm doesn't have a composite mark yet — a PA Mark is published once enough pricing inputs exist (trade prints, fund marks, round prices). The rest of the record below builds toward it.
Recorded secondary trades
No secondary trades in Waterwhelm shares have been recorded yet. When a print lands — third-party, direct report, or platform — it appears here with structure, source, and price.
Institutional fund marks
No SEC-registered fund has reported a fair-value mark on Waterwhelm in its N-PORT filings yet. We sweep new filings monthly.