Grey water treatment systems on boats and yachts are essential for managing non-sewage wastewater generated from sources like sinks, showers, and laundries. These systems filter and treat grey water before it is either stored in dedicated tanks or discharged, ensuring compliance with environmental regulations that prevent pollution.
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1-2 weeks delivery time The Osculati Grey Water Tank is a universal drainage solution, designed to centralize wastewater from showers, sinks, kitchens, and toilets, preventing multiple hull bores. This compact and efficient model is supplied without a pump or automatic float, offering compatibility with various Rule, Jabsco, Attwood, Europump, TMC, and Seaworld pumps and float switches.
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1-2 weeks delivery time The Europump Auto Grey Water Drain System is a fully automatic drainage solution, designed to centralize all wastewater outlets from the shower, sink, kitchen, toilet, and more. Featuring a quick-inspection snap cover and a removable strainer, it ensures efficient and reliable grey water management. Available in 12V and 24V models, offering high performance with a max flow rate of 48 L/min.
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$ 82,81
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1-2 weeks delivery time The Attwood Grey Waste Water Drain System is an efficient and compact solution for centralizing all onboard grey water drains, including showers, sinks, kitchens, and bathrooms. Featuring a built-in check valve, it prevents bad odors, while the quick-inspection snap cover allows for easy maintenance. Available in 12V (27 L/min & 41 L/min) and 24V (41 L/min) models to suit various system requirements.
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$ 208,78
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1-2 weeks delivery time The Rule 98 Grey Water Pumping Unit is a reliable, fail-safe shower pump made of durable plastic. It features a capacity of 50 L/min and is designed for use with hoses of 19, 25, 29, and 38 mm sizes. Compact and efficient, this pump ensures long-term performance for grey water pumping applications on your boat.
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$ 306,15
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1-2 weeks delivery time The Whale Grey Water Tank with IC Sensor is a high-performance waste management system, designed to handle grey water up to 90°C. Equipped with built-in sensors for automatic pump control, it ensures efficient drainage while preventing overflow. The splash-proof triple-seal cover protects the electronics from water exposure, and the convex base allows complete draining. Available in 8L and 20L capacities, with the 20L model featuring dual sensors for additional safety.
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$ 448,18
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1-2 weeks delivery time The Hollex Grey Water Drain System Stainless Steel is a powerful and durable shower pump, designed for efficient grey water pumping. With a capacity of 30 L/min and constructed from stainless steel, this unit is compatible with 20 mm and 38 mm hoses. It is compact, measuring 290x210x130 mm, making it an ideal choice for marine applications.
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$ 517,47
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1-2 weeks delivery time The Vetus GWDS Grey Water Discharge System is designed to efficiently remove waste water from your shower. This system is housed in a waterproof case and comes with a pump and float switch. It offers various voltage options, including 12V, 24V, 230V/50Hz, and 120V/60Hz, with power ratings of 340W, 350W, 600W, and 250W. The unit features an easily removable lid for simple maintenance.
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$ 1.159,89
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1-2 weeks delivery time The Vetus SAPRO Sani-Processor offers an efficient solution for managing both black and grey water on board your yacht. This compact and quiet unit macerates wastewater quickly and silently, making it ideal for luxury yachts. With various power options and easy installation, the SAPRO system integrates seamlessly with household toilets and ensures a clean, odor-free environment.
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$ 1.540,40
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1-2 weeks delivery time The Tecma Sanisplit NK is a versatile and efficient black and grey water treatment system designed to handle wastewater from various sources on board your vessel, including sinks, bidets, washing machines, and dishwashers. This unit ensures smooth waste processing and pumping, preventing clogs and ensuring proper disposal. With quiet operation and easy maintenance, it’s an essential addition for any boat with advanced waste management needs.
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$ 1.753,03
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1-2 weeks delivery time The Planus Pro-Lift Mono/Twin is a robust and efficient solution for managing grey and black water in marine environments. Available in single (Mono) and dual (Twin) pump configurations, it features stainless steel construction and high-performance Vortex pumps, ensuring reliability in both residential and commercial applications.
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$ 2.105,13
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1-2 weeks delivery time The Planus Water-Lift Pumping Unit is a reliable solution for managing grey and black water in situations where gravity flow is insufficient. Designed for marine applications, this unit features a powerful Vortex pump, an IP55-rated enclosure, and compatibility with multiple voltage options (12V, 24V, and 220V). Ideal for demanding environments, it ensures efficient wastewater discharge and long-lasting performance.
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$ 1.356,18
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1-2 weeks delivery time The TECMA SaniSplit is an advanced automatic processing unit designed for efficient management of black and gray water from showers, bidets, and washbasins. Featuring a powerful pump and a built-in pressure switch, this compact unit ensures smooth water transfer to waste tanks. With voltage options of 12V, 24V, and 230V, and a removable pump for easy maintenance, the SaniSplit is a reliable and versatile solution for various waste management needs.
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$ 1.380,61
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1-2 weeks delivery time The Osculati 16.117.64 – Rule 98B Grey Water Drain System 12V is a compact automatic pump unit designed to collect and evacuate grey water from showers, sinks, and air conditioning condensate systems on board. It includes a grey water tray with integrated strainer and multiple inlets for easy installation. Powered by a 12V motor, it delivers a flow rate of up to 55 liters per minute, making it an efficient and reliable solution for grey water management on boats.
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$ 440,14
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1-2 weeks delivery time The Osculati 16.117.65 – Rule 98B Grey Water Drain System 24V is an efficient marine grey water collection system featuring a 24-volt Rule 98B automatic pump. Designed for collecting wastewater from showers, sinks, and air conditioners, it includes an integrated tray with a removable strainer. With three inlet ports and a 55 l/min flow rate at only 1.8 A current draw, this system offers quiet, reliable drainage with minimal power consumption — ideal for larger vessels or 24V onboard electrical systems.
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$ 451,63
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1-2 weeks delivery time Compact and efficient, the Osculati 16.130.12 – Europump Auto Grey Water Drain System 12V is engineered to handle centralized drainage from showers, sinks, galleys, and toilets. Powered by a 12V pump (type 16.124.03) drawing just 3.0A, it offers a maximum flow rate of 48 l/min and a delivery head of 3 meters. The system includes a removable strainer for easy cleaning and a snap-fit inspection cover for quick access. Compatible with input hoses of Ø19/25/29/38 mm and a Ø19 mm outlet.
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$ 82,81
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1-2 weeks delivery time The Osculati 16.130.24 – Europump Auto Grey Water Drain System 24V is a compact grey water management solution for centralized drainage of showers, sinks, kitchens, and toilets. Equipped with the 24V Europump 16.124.04 drawing only 1.6 A, it delivers up to 48 l/min with a maximum head of 3 meters. Designed for convenience, it features a removable strainer and a quick-access snap-fit inspection cover. Inlets support multiple hose sizes (Ø19/25/29/38 mm) with a Ø19 mm outlet.
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$ 82,81
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1-2 weeks delivery time IC Sensor is a smart grey water management solution suitable for up to 90°C waste, ideal for centralized installations. With integrated sensors, convex draining base, and pre-moulded hose adapters, it simplifies maintenance and maximizes efficiency. The splash-proof cover includes triple-seal electronics isolation. Supports direct installation of Gulper pumps (models 16.155.40 / 16.156.24) and fits multiple inlet/output sizes: Ø19/25/38 mm.
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$ 448,18
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1-2 weeks delivery time The Osculati 16.222.98 – Whale Grey Water Tank 20 liter with IC Sensor offers advanced grey water management for demanding marine environments. Suitable for waste up to 90°C, the 20L tank integrates a dual-sensor system for automatic pump control and high-level alerts. It features a splash-proof, triple-sealed cover with isolated electronics, a convex base for total drainage, and multiple inlet/output fittings. Ready for direct installation of Gulper series pumps (models 16.156.12 / 16.156.24), it ensures quiet, reliable, and scalable waste handling even in multi-inlet configurations.
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$ 950,91
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1-2 weeks delivery time The Osculati 16.222.01 – Whale Grey Water Tank Lid & 1 Sensor is a replacement or upgrade lid for Whale grey water tanks, equipped with a single IC sensor for automatic pump control. Designed for use with grey water up to 90°C, the lid features an integrated splash-proof, triple-sealed electronic module isolated from moisture. Ideal for installations requiring a sensor retrofit or as a spare part for 8L and 20L Whale tank systems.
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$ 325,38
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1-2 weeks delivery time The Osculati 16.413.73 – Attwood Grey Waste Water Drain System 12V 27 l/min is a compact, centralized drainage unit designed for managing grey water from multiple sources on board, including showers, sinks, kitchens, and bathrooms. Featuring a high-reliability Attwood 12V pump with a flow rate of 27 l/min, the unit includes an integrated check valve to prevent odors and a snap-fit inspection cover for easy maintenance. Ideal for tight installations on small to medium-sized vessels.
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$ 208,78
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How does a grey water treatment system help reduce wastewater discharge into the marine environment?
A grey water treatment system helps reduce wastewater discharge into the marine environment by filtering out contaminants such as oil, grease, soap, and body oils before the water is released overboard. Through advanced filtration and membrane technologies, it effectively removes particulates and bacteria, ensuring clean water is safely discharged or reused aboard. This system provides a cost-effective and environmentally friendly solution for boat owners and operators, helping to comply with regulations and reduce emissions.
By integrating such a system alongside your Boat Water Tank setup, you enhance your vessel’s sustainability, minimize ecological impact, and promote cleaner, more responsible marine operations.
How do Grey Water Treatment Systems for Boats differ from black water treatment systems?
Grey Water Treatment Systems for Boats process wastewater from sinks, showers, and laundries, using water filters and recycling methods to remove detergents, body oils, and other contaminants before discharge. In contrast, black water treatment systems handle sewage from toilets, requiring more advanced disinfection and nutrient removal processes to meet permit regulations for overboard discharge. Greywater treatment is a cost-effective and easy-to-install solution that helps boat builders and commercial marine operators comply with inland and municipal wastewater guidelines.
What are the environmental advantages of implementing a grey water recycling system?
A grey water recycling system helps reduce the environmental impact of boats by minimizing the discharge of untreated wastewater into marine ecosystems. By filtering and reclaiming water from bilge water and gray water holding tanks, it provides a cost-effective and efficient solution for freshwater conservation on cruises, tankers, and other vessels. Designed and built with modular technology, these systems reduce reliance on pump outs, lower chlorine usage, and support the marine industry's sustainability goals by ensuring quality water treatment while maintaining effective wastewater management.
For installation guidance, check out our step-by-step guide:
How to Install a Shurflo Water Pump