Investors / United States / Burnt Island Ventures
Burnt Island Ventures
Venture capital · San Francisco, CA, United States · North America
Burnt Island Ventures is a venture firm that finds, funds, and supports founders working in water. It also engages with LPs, founders, and co-investors through its portfolio, events, and podcast.
Invests inIndustrial & ManufacturingAI & Machine Learning
In its own wordswaterclimateclimate techsustainabilityresource management
Your fit with Burnt Island Ventures
Four questions about your startup
See how your round matches what it backs, point by point.
Or find every investor that fitsBurnt Island Ventures lists 36 checked portfolio companies on its own site and is named in 7 funding rounds, 5 of them as lead. Its most frequent entry is Series A, 71% of the companies with a known first round. Its largest themes are Industrial & Manufacturing (30%), AI & Machine Learning (17%) and Healthcare & Biotech (11%). 71% of its companies are based in United States. It invests most often alongside Imagine H2O, WovenEarth Ventures and Mazarine Ventures.
Counts come from funding rounds that name Burnt Island Ventures, complete from mid-2025: earlier rounds appear only when they were reported later. Round amounts and full round histories are on Fundup AI.
Round figures show recent activity, not Burnt Island Ventures' whole history. Rounds on record name 7 companies; its own site lists 36. Funding rounds are complete from mid-2025, so counts and the yearly trend undercount a firm that invested before then. The portfolio, themes and places come from its own site and are not affected.
Entry stage
share of companies by the stage of its first roundBurnt Island Ventures does not state its stages on its site, so only what it does is shown.
Show as a table
| Value | |
|---|---|
| Pre-seed | 0% |
| Seed | 29% |
| Series A | 71% |
| Series B | 0% |
| Growth | 0% |
Activity by year
rounds it joined, last 10 yearsShow as a table
| Total | Rounds it led | |
|---|---|---|
| '17 | 0 | 0 |
| '18 | 0 | 0 |
| '19 | 0 | 0 |
| '20 | 0 | 0 |
| '21 | 0 | 0 |
| '22 | 0 | 0 |
| '23 | 0 | 0 |
| '24 | 0 | 0 |
| '25 | 3 | 1 |
| '26 | 4 | 4 |
Investor profile
percentile among all firmsShow as a table
| Measure | Percentile of all firms | Value |
|---|---|---|
| Portfolio size | 74th | 36 companies |
| Recent activity | 86th | 5 rounds in 12 months |
| Early stage | 61th | 29% of entries at pre-seed or seed |
| Evidence | 91th | 19% of companies confirmed by a round |
| Sector focus | 53th | 30% in its largest sector |
| Reach | 78th | 5 countries |
Investment themes
share of its checked companiesThis firmAll checked companies
Show as a table
| This firm | All checked companies | |
|---|---|---|
| Industrial & Manufacturing | 30% | 7% |
| AI & Machine Learning | 17% | 18% |
| Healthcare & Biotech | 11% | 15% |
| Consumer | 8% | 3% |
| Enterprise Software | 6% | 8% |
| Space & Defense | 6% | 3% |
| Fintech | 6% | 12% |
| Real Estate & Construction | 6% | 3% |
Invests most often with
firms sharing its portfolio companiesShow as a table
| Share | |
|---|---|
| Imagine H2O | 21 |
| WovenEarth Ventures | 5 |
| Mazarine Ventures | 4 |
| DCVC | 3 |
| Echo River Capital | 3 |
| Emerald Technology Ventures | 3 |
| Anorak Ventures | 2 |
| Connecticut Innovations | 2 |
Its portfolio companies
where they are based, and what their own sites showSite status
- Site answers36100%
- No longer answers00%
- Points to another company00%
- Parked or sold domain00%
A site that stops answering three checks in a row is counted as no longer answering; that is not proof of closure. A site that points to another company is often an acquisition.
Co-investor network
who it backs companies with, and who they back togetherCompare Burnt Island Ventures head to head
portfolio size, rounds, entry stages, themes and the companies both backThree or more firms at once: portfolio overlap.
Funds
from public registers and its siteRecent portfolio activity
when companies last raised with Burnt Island Ventures| Date | Company | Stage |
|---|---|---|
| 26 Oct 2026 | Seed Led | |
| 12 Oct 2026 | Series A Led | |
| 29 Jul 2026 | Seed Led | |
| 14 May 2026 | Series A Led | |
| 19 Nov 2025 | Series A | |
| 21 Oct 2025 | Series A | |
| 14 Aug 2025 | Series A Led |
Round details for Burnt Island Ventures
Amounts, full round histories and every co-investor in Burnt Island Ventures' rounds are on Fundup AI. VCinfo covers investors and their portfolios.
Portfolio
36 companies checked against their own sites| Company | What it does | Themes | First round with it | Evidence |
|---|---|---|---|---|
| 2S Water Inc. provides real-time multimetal water analysis equipment and services. | Industrial & ManufacturingEnterprise Software | Portfolio page | ||
| Aclarity destroys PFAS contaminants on-site with its Octa System | Industrial & ManufacturingEnterprise Software | Portfolio page | ||
| AlgaFilm Technologies provides wastewater treatment solutions using an algae biofilm-based system | Industrial & ManufacturingAI & Machine Learning | Portfolio page | ||
| Aquafortus treats high salinity brines by selectively removing water rather than filtering contaminants using its ABX system. | Industrial & ManufacturingOther | Portfolio page | ||
| Aqua Membranes manufactures spiral-wound membrane elements for industrial reverse osmosis systems | Industrial & ManufacturingFood & Agriculture | Portfolio page | ||
| Aquatic Labs provides an end-to-end solution for aquatic monitoring needs, from instrumenting projects with scalable tools to providing real-time data-driven insights | Industrial & ManufacturingAI & Machine Learning | Portfolio page | ||
| AquiSense produces UV-C LED water treatment systems | Industrial & ManufacturingHealthcare & Biotech | Portfolio page | ||
| Beagle Services provides water security and plumbing services, including installations, repairs, and leak detection. | Real Estate & ConstructionConsumer | Portfolio page | ||
| Biota provides real-time PFAS data and testing solutions to support companies in the PFAS remediation industry. | Enterprise SoftwareHealthcare & Biotech | Jul 2026Seed | Page + round | |
| Cala pre-processes the world's public information into verified, structured facts for agents to query | FintechHealthcare & Biotech | Portfolio page | ||
| Cala Systems produces an intelligent heat pump water heater that customizes water heating for each home, each day. | Industrial & ManufacturingConsumer | Portfolio page | ||
| CivilGrid provides a platform for managing and mapping site data for construction and infrastructure projects. | ConsumerIndustrial & Manufacturing | Portfolio page | ||
| CNSRV provides controlled defrost and chill systems for commercial kitchens | Food & Agriculture | Portfolio page | ||
| CREW provides wastewater treatment facilities with a process intensification solution that improves performance, lowers costs, and permanently removes greenhouse gases. | Climate & EnergyAI & Machine Learning | May 2026Series A | Page + round | |
| Current Software is a cloud-native billing platform built for utilities and municipalities. | Healthcare & BiotechFintech | Portfolio page | ||
| Daupler provides response management solutions for public works, utilities, and other service providers | Healthcare & BiotechIndustrial & Manufacturing | Portfolio page | ||
| Epoch provides a first-mile data layer for supply chains, offering solutions for environmental, social, and regulatory compliance use cases. | Space & DefenseAI & Machine Learning | Oct 2026Seed | Page + round | |
| Flocean provides sustainable freshwater access for large-scale operations through subsea desalination solutions. | Industrial & ManufacturingAI & Machine Learning | Nov 2025Series A | Page + round | |
| Floodbase provides an AI platform for insuring uncovered flood risk | FintechClimate & Energy | Portfolio page | ||
| HOPE Hydration is a digital out-of-home network powered by premium water refill stations serving consumers in the world’s busiest places. | ConsumerSpace & Defense | Portfolio page |
About this data
site last read 10 Nov 2026- Site
- burntislandventures.com
- Last read
- 10 Nov 2026
- Watching since
- 6 Nov 2026
- Rounds since
- 14 Aug 2025
- Companies checked
- 36
Rates come from what VCinfo has observed since observation_start. Firms tend to remove companies that closed, so early rates understate reality. A company leaving a portfolio page does not mean it closed or exited. An unreachable site means our checks failed, nothing more.
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