Idinvest Partners
Idinvest Partners is a Paris-based private equity and venture capital firm, now part of Eurazeo. Founded in 1997, Idinvest financed thousands of European companies across venture, growth, and private debt. As of 2026 it sits inside Eurazeo, and in water it had backed two companies, including decentralised wastewater specialist Organica Water.
Compiled by Antoine Walter, (don't) Waste Water, from official filings and direct intelligence in Leviathan.
The take
Idinvest Partners is, today, a piece of someone else's house. For two decades one of Europe's larger independent private-markets investors, Idinvest was bought outright by the French group Eurazeo, which completed the full takeover in 2020 and folded Idinvest's venture, growth, and private-debt arms into its own platform. The Idinvest name has effectively retired, and founder Christophe Baviere now sits as Co-CEO of Eurazeo.
Idinvest's roots run back to 1997, when it began life as Allianz's in-house private equity arm before spinning out as an independent firm in 2010. At its peak it managed several billion euros and claimed to have financed more than 4,000 European businesses across three lines: venture and growth capital, private debt, and fund investing for small and mid-sized companies. Water was never one of its headlines.
Idinvest's water exposure was that of an occasional visitor, not a specialist. (don't) Waste Water counts two water companies in its book, both backed near the end of its independent years: Organica Water, which builds decentralised wastewater-treatment plants that look more like botanical gardens than sewage works, and Transcend Software, whose Design Generator automates the engineering of treatment plants. One cleans the water; the other designs the plant that does.
Idinvest is best filed, for a newcomer mapping who funds water in Europe, as history that now lives inside Eurazeo. Its last water cheque was written in 2019, and any founder chasing Idinvest capital today is really knocking on Eurazeo's door, where its venture and growth team now sits.
Water Commitment Score
Compiled from official filings, third-party records, and direct intelligence from investors and founders, in Leviathan · recomputed monthly · as of Jun 2026.
How they invest
Portfolio · 2 water companies
Invests alongside
Highlighted = profiled on (don't) Waste Water.
Frequently asked
- What does Idinvest Partners invest in?
- Idinvest Partners is a Paris-based private equity and venture capital firm that financed thousands of European small and mid-sized companies across venture and growth capital, private debt, and fund investing. In water it backed two companies, Organica Water and Transcend Software. Idinvest is now part of Eurazeo.
- Is Idinvest Partners still active?
- Not as an independent firm. Eurazeo acquired a majority of Idinvest Partners in 2018 and bought the remaining capital in 2020, fully merging it into the Eurazeo group. The Idinvest brand has effectively retired, and its teams now invest under Eurazeo's asset-management platform.
- How many water companies has Idinvest Partners backed?
- Idinvest Partners has backed two water companies, both in water-treatment technology: Organica Water, a decentralised wastewater-treatment business, and Transcend Software, which automates treatment-plant design. (don't) Waste Water rates Idinvest's water commitment Occasional, with its most recent water deal recorded in 2019.
- Where is Idinvest Partners based?
- Idinvest Partners is headquartered in Paris, France, and historically ran additional offices in Frankfurt, Madrid, Dubai, and Shanghai. Founded in 1997, Idinvest grew into one of Europe's larger independent private-markets investors before its 2020 merger into the French listed group Eurazeo.
- Is Idinvest Partners the same as Eurazeo?
- Idinvest Partners is now part of Eurazeo, but the two began as separate firms. Eurazeo, a listed French investment group, acquired Idinvest in stages and completed the full takeover in 2020. Idinvest's venture, growth, and private-debt teams now operate inside Eurazeo's asset-management platform.