The Water VC You Can't Name (How HG Ventures Deployed $48,523,663 in Water Tech)
The Heritage Group, a 100-year-old, family-owned industrial conglomerate based in Indiana with no public profile, has quietly become the fifth-largest early-stage water tech investor in the world—deploying $48.5 million annually across 41 companies, with water making up 18% of its portfolio. What makes HG Ventures so counterintuitive is that it operates like a venture capital firm without being one: it’s not a fund, it has no acquisition strategy, and it doesn’t even consider water a core business. Yet it outperforms traditional CVCs, surviving past the typical four-year lifespan. The secret? A radical investment thesis that puts 'Heritage Group’s ability to help' first—followed by people, market, and technology. Its lead investor, Ginger Rothrock, a PhD chemist and former Nasdaq-listed biotech co-founder, leads with scientific rigor, deep operational access, and a refusal to let technology trump human storytelling. The team conducts all due diligence internally, leveraging 75 R&D scientists and real-world customer feedback from their waste management arm, Invita. They don’t rely on market reports—instead, they test prototypes in their own facilities and validate demand by calling actual industrial clients. Their model is built on long-term flexibility, follow-on investing at 71% (far above the 30% CVC average), and a culture that values empathy over ego.
HG Ventures deploys $50M/year with no fund, no acquisition strategy, and no water core business—yet ranks as the 5th largest early-stage water investor globally.
Their investment thesis prioritizes 'Heritage Group can help' first, then people, market, and technology—technology is last.
All due diligence is internal: HG uses its 75 R&D scientists, real customer feedback, and in-house testing to validate startups.
They follow on with 71% of portfolio companies—far above the 30% CVC average—because they believe in long-term partnership over short-term exits.
The most important skill for water tech founders is storytelling—not technical prowess, according to HG’s lead investor.
…and 3 more takeaways available in PodZeus
The Unseen Powerhouse of Water Tech
The episode opens with the host in Indianapolis, contrasting the Indy 500 with the Industrial Water Forum, where the real race—innovation in water tech—is being won by a company few have heard of: The Heritage Group.
The Paradox of HG Ventures
“They still come out as the top 5 watertech investors in the world. And this type of counter-intuitive fact is also when my own AI agents started arguing with me because I asked it about HG Ventures in preparation for today's episode, and it pushed back hard because it told me that the data must be wrong.”
The Real Investment Thesis: Help First
“She will tell you on this microphone that I hate membranes. I swore I would never work with membranes again as an industrial person. Membranes are evil. And then she will walk you through exactly why she backed one of the best funded membrane startups in the space anyway.”
The Internal Due Diligence Machine
“We're able to do really good diligence on PFAS companies. And so at the time we made the bet and the clarity. And then we learned about a couple of companies that were testing for it. Well, that just makes sense.”
The Storytelling Imperative
“I advise founders if there's a path, if they don't want to take venture capital, I'm absolutely all for that because it's very difficult to meet the metrics that a venture capitalist wants to see.”
“She will tell you on this microphone that I hate membranes. I swore I would never work with membranes again as an industrial person. Membranes are evil. And then she will walk you through exactly why she backed one of the best funded membrane startups in the space anyway.”
“So we're able to do really good diligence on PFAS companies. And so at the time we made the bet and the clarity. And then we learned about a couple of companies that were testing for it. Well, that just makes sense.”
“And when you ask her for her one word thesis on water, the answer comes back as That it's inevitable.”
Host
Guest
Ginger Rothrock
person
HG Ventures
organization
The Heritage Group
organization
Xylem
organization
Invita
organization
Purefinity
organization
120 Water
organization
Electromat
organization
ZwitterCo
organization
Clarity
organization
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