PolicyBrief
S. 3162
119th CongressNov 7th 2025
A bill to require the Secretary of Defense to carry out a pilot program under which the Secretary shall develop and implement a comprehensive wastewater surveillance system at certain installations of the Department of Defense, and for other purposes.
IN COMMITTEE

This bill establishes a Department of Defense pilot program to implement comprehensive wastewater surveillance at select military installations for monitoring drug use and infectious disease prevalence among service members.

Elissa Slotkin
D

Elissa Slotkin

Senator

MI

LEGISLATION

DoD Mandates Two-Year Pilot Program for Wastewater Surveillance at Military Bases to Track Drug Use and Disease

If you thought the military was only tracking what you do on duty, think again. This bill requires the Department of Defense (DoD) to launch a two-year pilot program for a comprehensive wastewater surveillance system at a minimum of four military installations. Essentially, the DoD is looking to use the contents of the plumbing to get a real-time, non-invasive read on the health of the force.

The Secretary of Defense must get this program running within 180 days and use it to monitor two specific things: the prevalence of infectious diseases and the use of covered drugs (Schedule I or II controlled substances, with a few exceptions for older, approved prescription meds). The goal is simple: improve force health protection and readiness by getting better data. They have to use existing resources to make it happen, which could mean a serious stretch for current budgets and personnel at the chosen bases.

The Plumbing as a Policy Tool

This isn't about catching individuals; it's about population trends. Think of it like a massive, continuous health survey that doesn't require anyone to fill out a form. For infectious diseases, this is a clear win. If a new strain of flu or a significant outbreak of a gastrointestinal illness starts circulating, the wastewater data could provide an early warning signal days or weeks before service members start showing up at the clinic. This is a genuinely smart way to protect large, concentrated populations like those living and working on a base.

The Drug Use Data Catch

Where things get more complex is the monitoring of covered drugs. The bill specifically mandates that at least one installation must establish a surveillance system for tracking the use of these controlled substances. While the stated purpose is to improve force health and readiness, the practical implication is that the DoD will now have highly localized, quantitative data on drug use trends on a specific base.

For the service members living on those four pilot installations, this means their collective private activities are now subject to continuous monitoring. While the data is aggregated and not tied to individuals, the information gathered could drive policy changes—or even targeted enforcement—in ways that feel intrusive. The bill requires the Secretary to submit a report to Congress 90 days after the pilot ends, including recommendations for policy changes or interventions based on the trends observed. That’s the real leverage point: the data collected will directly inform future regulations that could impact everyone.

The Implementation Headaches

This bill has a medium level of vagueness around the technical requirements. It requires the use of “appropriate technologies” and a “uniform data system,” but leaves the specifics up to the DoD. This discretion is necessary for a pilot program, but it means the four installations chosen might end up dealing with different vendors, different testing parameters, and different interpretations of what “appropriate” means. For the personnel tasked with setting this up, it’s a big, complex IT and logistics project dropped right into their lap, all while relying on “existing resources.”

Ultimately, this pilot is a major step toward using modern, non-invasive surveillance to manage military health. The benefit is better disease control and a clearer picture of substance use. The potential challenge lies in the privacy implications and how the aggregated data on drug use will be used to shape future policies affecting the lives and careers of service members.