Gov. Fund · WATER INVESTOR

The Grantham Foundation

The Grantham Foundation is a water-focused gov. fund that has backed 2 water companies since 1997. (don't) Waste Water rates its water commitment Occasional.

Occasional
Water Commitment
Type
Gov. Fund
AUM
$500M
Founded
1997
HQ
Boston, United States
Stage
Series A
Median round
$36.7M
Portfolio
2 cos

Water Commitment Score

Tier
Occasional
2 water companies · last deal 2023 · leads ~0% of rounds · Med confidence
How this is scored ↗
as of Jun 2026 · no pay-to-rank

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

Series A1
Median round$36.7Mrange $23.3M - $50M · 2 disclosed

Portfolio · 2 water companies

Summit Nanotech
Summit Nanotech has developed Denali, a direct-lithium-extraction platform that passes brines t
$50M2023
Lilac Solutions
Lilac Solutions develops a proprietary ceramic ion-exchange bead technology that rapidly extrac
$23.3MSeries A · 2020

See the full portfolio in Leviathan →

Invests alongside

Breakthrough Energy Ventures1x Lowercarbon Capital1x Engine Ventures1x Helios Climate Ventures1x Xora Innovation1x Evok Innovations1x BDC Capital1x Capricorn Investment Group1x NGP1x

Highlighted = profiled on (don't) Waste Water.