Purasan EX 2 Treatment System

Purasan EX 2 – Compliant Onboard Waste Treatment Without the Holding Tank Hassle

The Raritan Purasan EX 2 offers boaters a smarter, greener way to handle waste—without relying on holding tanks or marina pump-outs. USCG-certified as a Type I Marine Sanitation Device (MSD), the Purasan EX 2 allows legal, safe discharge of treated waste in approved U.S. waters, helping you stay compliant while reducing your environmental impact.

Ideal for coastal cruisers, liveaboards, and weekend sailors, this compact system treats each flush in real time—neutralizing bacteria and viruses with every cycle. The result? No holding tank odors, no risk of overflow, and no more worrying about pump-out facilities on your route.

The latest EX 2 model features an upgraded tablet-based disinfectant system that delivers more precise dosing and better consistency than previous liquid-based designs. It’s easier to maintain, stores well in seasonal conditions, and is perfect for boaters navigating both salt and freshwater environments.

Installation is designed with flexibility in mind. The Purasan EX 2 works with most manual or electric marine toilets, and its small footprint fits easily into tight compartments. Plumbing connections are straightforward, and once installed, the system runs automatically—activating the treatment cycle every time the toilet is flushed.

Unlike basic MSDs, this unit provides EPA-compliant treatment levels by combining maceration, advanced disinfection, and a timed treatment sequence. That means you get cleaner discharge and peace of mind, without compromising on convenience or water conservation.

If you’re ready to move beyond traditional holding tanks, the Purasan EX 2 is the eco-smart upgrade. It’s a trusted solution from Raritan, a marine sanitation leader for over 60 years.

Ditch the tank. Treat waste at the source. Stay compliant wherever you cruise.

The Purasan EX 2 is an innovative, USCG-certified marine sanitation device designed to provide reliable and eco-friendly waste treatment for boaters navigating both freshwater and saltwater. Originally developed for the freshwater lakes of Kentucky, this advanced system has evolved into a highly sought-after solution for its ability to treat waste at the source, ensuring clean discharge into tidal waters while promoting environmental stewardship.

Raritan recognizes the diverse needs of boaters, and the Purasan EX 2 offers a smart alternative to traditional holding tanks. While holding tanks are suitable for some, they pose challenges such as limited capacity and the risk of illegal dumping when pump-out facilities are unavailable or non-operational. With the Purasan EX 2, waste is treated immediately and discharged as compliant effluent, helping boaters avoid the hassles of full tanks or non-functioning pump-outs while maintaining responsible waste management practices.

Understanding Type I Marine Sanitation Devices

The Purasan EX 2 is a Type I Marine Sanitation Device (MSD) designed for use within the three-mile limit, where treatment is required before discharge. However, boaters must be mindful of No Discharge Zones (NDZs), where discharge of treated blackwater is prohibited. Navigators should consider their cruising areas, the availability of pump-out stations, and the time spent in NDZs to determine the ideal sanitation solution for their vessel.

Advanced Flow-Through Design

The Purasan EX 2 operates as a flow-through system, seamlessly connecting the toilet, treatment tank, and thru-hull fitting. During each flush, waste enters the treatment tank, where a precise amount of disinfectant is introduced to neutralize pathogens. Simultaneously, an equal volume of treated waste is discharged overboard. This efficient process eliminates the need for long-term storage, ensuring a cleaner and more convenient boating experience. New for the EX 2 is the elimination of the manifold that was a part of the old tablet dispensing system making the dispensing system much more streamlined and efficient.
Purasan EX: Engineered for Performance

The latest Purasan EX 2 is packed with enhancements to deliver superior functionality:

• Enhanced Disinfectant Tablets: Inspired by commercial wastewater treatment technologies, these tablets create a powerful disinfectant that neutralizes waste on contact. A built-in control system alerts users when tablets need replacement, ensuring uninterrupted operation.
• High-Speed Macerator: Integrated into the treatment tank, this macerator efficiently breaks down waste, ensuring optimal contact with the disinfectant for effective treatment.
• Air Pump Integration: A newly added air pump improves water flow into the treatment tank, enabling flexible mounting options while preventing premature tablet disintegration.
• Versatile Compatibility: While initially designed for freshwater systems, the Purasan EX 2 now works seamlessly with most marine toilets, flushing with either saltwater or freshwater.

Why Choose the Purasan EX 2?

The Purasan EX 2 is not just a sanitation solution; it's a commitment to sustainable boating. By treating waste at the source, it eliminates the risks associated with improper waste disposal while aligning with environmental regulations. Whether you're cruising along tidal waters or enjoying extended trips.

The Purasan EX 2 empowers boaters with:

• A cleaner, more convenient alternative to holding tanks.
• Compliance with waste treatment standards in regulated areas.
• A user-friendly system designed for effortless maintenance.

Make the responsible choice for your vessel with the Purasan EX 2 — an essential addition for any environmentally conscious boater seeking hassle-free waste management.