"We saw products that were out there that were kind of doing the same thing we were wanting to do, sort of like a robotic sprinkler head, and they were just really expensive," Hartzog said. "The engineer in me gets annoyed when I see sort of a luxury technology that's prohibitively expensive when there's got to be a low-cost way to do it. So, it was kind of a chip-on-the-shoulder motivation to see if it was feasible or not."

Irrigation technology is often outdated, and the industry hasn't seen many advancements in recent years. Herrera and Hartzog's idea for Pinpoint Irrigation looked to reimagine a system that was long overdue for innovations.

Rather than a traditional irrigation system, which has sprinklers spray in a circular pattern that often overlaps, Pinpoint works with a robotic sprinkler head that traces out an area's boundaries and changes its spray distance as it rotates, spraying water only where it's needed. A technologically advanced sprinkler head like theirs also allows for the introduction of sensors that can measure data, such as hyperlocal climate data about the environment they're placed in. The sensors will also help users track issues in real time.

"At the commercial level, if something goes wrong -- which, with thousands of sprinklers something goes wrong once a week -- companies usually only retroactively find it," said Herrera. "What if there's a leak between the sprinklers? They retroactively find it while it's just losing water. Our idea is with the sensor fusion and our sprinkler, you get precision and you get infrastructure protection."

The two are hoping to use solutions they've found for irrigation to help improve larger water infrastructure issues, such as large-scale leaks. One solution is a new technology being developed at UT in the Cockrell School of Engineering. Current doctoral student Yuanjun Fan has been working in professor Michael Cullinan's lab on a project using mechanical sound waves to transmit data -- something that would be a low-cost, durable solution for communicating underground. The technology could communicate crucial data instantaneously, like the size and location of leaks, something that's not currently available.

"The status quo of technology cannot penetrate through solid surfaces at all," explained Hartzog. "What's innovative about this is that it's using acoustic signals. Like whale cries that can travel for miles and miles -- this is a similar thing. You're essentially screaming through a really solid, dense medium where traditional light waves can't get through."

The device is about the size of an AirTag and can measure metrics such as soil moisture to ensure plants and grass are getting enough water without overdoing it. The product is currently still in laboratory testing, but both Herrera and Hartzog know that's what it means to be at the forefront of innovation.

They are currently working with UT's research commercialization unit, Discovery to Impact to bring this exciting subsurface technology to market by developing the intellectual property behind it so that it can be licensed and further advanced with industry partners.

Through all of Pinpoint Irrigation's growth during the past three years, Herrera credits the support system at UT with not just helping them feel confident enough to pursue their idea, but also for resources to get it done.

"We were, honestly, looking for reasons not to do the idea in the spring semester," said Herrera. "We did a handful of other accelerators while at UT, always gathering more talent, really looking for any relevant resource -- all of these things were our momentum to start really building."

As of this summer, the team has secured over 10 signed pilot commitments across Texas, including regional water authorities such as Austin Water, the San Antonio Water System (SAWS), and the Lower Colorado River Authority (LCRA), as well as local properties including Pease Park and Waterloo Greenway.