| S. No | VC firm | Investee companies |
| 1 |
Acumen Fund |
Ecotact, Water Health International, Pharmagen Healthcare Limited |
| 2 |
XPV Capital |
APT Water Inc., Filter Boxx Water and Environment Corporation, Pionetics Corporation |
| 3 |
Khosla Ventures |
Nano H2O, Solum |
| 4 |
Taprogge Watertech |
Inge Water Technologies |
| 5 |
Siemens Venture Capital |
Inge Water Technologies |
| 6 |
Dow Venture Capital |
Clean Filtration Technologies, Inc., BioPetroClean Inc. |
| 7 |
Baytech Venture Capital |
Inge Water Technologies |
| 8 |
Aqua Resources Fund Limited |
Bluewater biointernational |
| 9 |
SAIL Venture Partners |
Micromedia Filtration, Water Health International Inc., M2 Renewables |
| 10 |
South Yorkshire Investment Fund |
Atranova |
| 11 |
Kinrot Ventures |
Ecochemtech, Hydrospin, Aquarius Spectrum, Diffusair Limited |
| 12 |
Cambridge Innovation Center |
Electrolytic Ozone Inc. |
| 13 |
Plymoth Venture Partners |
Pump Engineering Inc. |
| 14 |
BDB Technologies and Hi-tech Investments |
Rotec |
| 15 |
MeidLinger Partners |
Triton Format, Environmental Operating Solutions, Liberty Hydro |
| 16 |
Avishakar Venture Management |
water Life India Pvt Ltd, Saraplast |
| 17 |
GE Capital |
212resources |
| 18 |
Gemini Israel Funds |
Takadu |
| 19 |
Giza Venture Capital |
Takadu |
| 20 |
Draper Fischer Jurvetson |
Oasys Water |
| 21 |
ICOS Capital |
BiAqua, Dutch Rainmaker |
| 22 |
Frog Capital |
Ostara Nutrient Recovery Technologies Inc., Quay Technologies |
| 23 |
Vantage Point Venture Partners |
Ostara Nutrient Recovery Technologies Inc. |
| 24 |
Peepul Capital Fund II LLC |
Aqua Designs India |
| 25 |
India Value Fund Advisors Pvt. Ltd |
UEM Group |
| 26 |
Prime Partners Asia Merchant Capital |
Halosource in partnership with Eureka Forbes |
| 27 |
IDFC Private Equity Fund II |
Doshion Ltd |
| 28 |
Sage Capital |
Concord Enviro Engineers Ltd |