Hach Homeland Security Technologies develops breakthrough technologies that can be used to detect contamination, alert you to terrorist activity, and improve general operational control of your drinking water supply.

Our latest innovation, GuardianBlue™ Early Warning System, is the first and only early warning system for drinking water to receive SAFETY Act designation and certification from the Department of Homeland Security.

GuardianBlue uses patented technology to detect, alert and classify a wide variety of threat contaminants. The system can also detect, alert, classify and learn real-world events in water distribution systems. And even detect and alert on unknown excursions.

GuardianBlue from Hach. It’s the only way to know the water is safe.