Drinking Water Treatment Systems – Transform Rainwater into Safe Drinking Water
With a GreenLife drinking water treatment system, you can convert harvested rainwater into high-quality drinking water – independently, safely, and without the use of chemicals. Our systems utilize multi-stage treatment processes including sediment filtration, activated carbon filtration, and UV disinfection, as well as optional ozone or reverse osmosis technology, to ensure reliable and hygienically safe water quality.
Whether for a residential home, tiny house, garden cabin, or remote off-grid location, our compact and low-maintenance systems are available as standalone units or complete packages with integrated rainwater storage tanks.
We also offer DVGW-certified models for standards-compliant private water supply systems. GreenLife drinking water treatment solutions provide a sustainable and decentralized approach to producing safe drinking water from rainwater wherever independence and resource efficiency are a priority.
UV 2000 drinking water treatment system
Small-scale system for self-sufficiency: Turn rainwater into drinking water! Turn rainwater into drinking water without chemicals using the GreenLife UV 2000 drinking water treatment system If you want to be independent of tap water or simply don’t have a water connection but do have access to rainwater, then our UV 2000 drinking water treatment system is just right for you. Whether for a home, industrial or commercial facility, construction trailer, boathouse, etc.: With the GreenLife water treatment system, you can supply yourself with good drinking water—treated from rainwater! Let’s first consider rainwater: It is formed through evaporation in the atmosphere—an excellent and free initial treatment. As a result, rainwater has a high baseline quality as drinking and utility water. Among other things, it is free of lime and phosphate as well as hormone and medication residues. Treating the water is advisable, as it can reabsorb substances before being stored in the tank. Please check with your local authority (e.g., the public health department in Germany) to see if any additional local regulations apply to the operation of such a system. If you have any questions, please contact us at info@greenlife.de.How the drinking water treatment system works Rainwater treatment is chemical-free: After mechanical filtration, bacteria, germs, and viruses are rendered harmless through UV disinfection. The system is characterized by exceptionally high disinfection efficiency combined with a compact design and low energy consumption. First, the rainwater is directed to the tank (cistern). Whenever possible, only roof runoff water should be used, as—unlike with yard and driveway surfaces—relatively low levels of contamination are expected. If leaf fall is anticipated, please use gutter screens or similar devices to prevent leaves from entering the tank. For optimal pre-filtration in the (rainwater) tank, we recommend using our fully biological rainwater filter BIOVITOR.The pre-filtered rainwater is transported from the cistern to the UV 2000 drinking water treatment system via the GUP 46 submersible pressure pump. There, it first passes through two sediment filters (20 µm and 10 µm), then an activated carbon filter, and finally undergoes UV disinfection: The water to be treated flows through the housing and is directed along the quartz immersion tube in which the lamp is mounted. The thin water film thickness of only 7.5 mm (referring here to the distance between the UV light exit on the quartz tube surface and the inner wall of the housing) ensures optimal penetration of the medium by the UV light. The maximum treatment capacity of the drinking water treatment system is 2,000 liters per hour. Maintenance and Care Instructions for the UV 2000 Treatment System The special UV lamps should be replaced after 10,000 operating hours; otherwise, the disinfection rate will decrease. The UV lamp can be switched off when the system is not in use. The compact design allows for easy, tool-free lamp removal and replacement, e.g., at the end of the lamp’s service life. For cleaning purposes, the quartz immersion tube can also be removed or installed without tools. The filter cartridges for sediment filtration and the activated carbon filter should be replaced as needed, but at least every 4 months.You can order the set of replacement filters for up to one year of water treatment from our shop.In addition, for your own safety, quality samples of the filtered water should be taken and tested at regular intervals. Advantages of the GreenLife UV 2000 Water Treatment System No chemicals are introduced into the water being treatedNo impairment of smell or taste Excellent water quality when using rainwaterLow-maintenance UV lampThe UV lamps used are characterized by a long service life, high disinfection efficiency, and low energy consumptionDrinking water quality in remote locations without a drinking water connectionLong service life of the systemLow operating costsTechnical Notes for the UV 2000 Drinking Water Treatment SystemAll components are pre-assembled on a mounting plate3-stage filter: Cartridges pre-equipped with filter elementsAutomatic switch with check valve for demand-based pump controlInstall inside the building/utility room (not outdoors if there is a risk of frost)The UV system is made of electropolished stainless steelThe UV lamp for UV disinfection has a service life of approximately 10,000 hoursThe system requires 230 V / 50 Hz
Drinking water treatment plant DVGW ZERT
Compact small-scale system for self-supply with DVGW certificationTreat rainwater into drinking water without chemicals Do you want to be less dependent on tap water, or do you simply not have a water connection? But do you have the option to collect rainwater? Then our rainwater treatment system with a UV disinfection unit and DVGW type-approval certificate is the right solution for you: This system can reliably meet the requirements of local health authorities regarding a DVGW-certified system. Please also check with your local authority (e.g., the public health department in Germany) to see if any additional local regulations apply to the operation of such a system. Whether it’s a single-family home, industrial or commercial facility, construction trailer, boathouse, or other remote building: With the GreenLife drinking water treatment system, you can supply yourself with good drinking water—derived from an inexhaustible, natural resource: rainwater! Rainwater is formed through evaporation in the atmosphere—an excellent and free initial treatment. As a result, rainwater has a high basic quality as drinking and utility water. Among other things, it is free of lime and phosphate as well as hormone and medication residues. Treating the water is advisable, as it can reabsorb substances before being stored in the tank. How the drinking water treatment system works With our system, rainwater is treated into drinking water without chemicals: After mechanical filtration, bacteria, germs, and viruses are inactivated through UV disinfection, rendering them harmless. Via the GUP 46 submersible pressure pump, the rainwater you have collected in a water tank (cistern) is fed to the DVGW-certified drinking water UV treatment system. There, it first passes through two sediment filters (20 µm and 10 µm), then an activated carbon filter, and finally undergoes UV disinfection. The system can treat a maximum of 3.4 m³/h of water. It has been tested for safety and functionality by the German Technical and Scientific Association for Gas and Water (DVGW). For further information, please contact us at info@greenlife.de Maintenance and Care Instructions for the DVGW-Certified Treatment SystemThe special UV lamps should be replaced after 10,000 operating hours; otherwise, the disinfection rate will decrease. The filter cartridges for sediment filtration and the activated carbon filter should be replaced as needed, but at least every 4 months. You can order the replacement filter set for up to one year of water treatment from our shop. In addition, for your own safety, quality samples of the filtered water should be taken and tested at regular intervals. Advantages of the GreenLife Water Treatment System DVGW CERTRainwater treatment without chemicalsNo impairment of taste or odorExcellent water quality when using rainwaterLow-maintenance UV lampThe UV lamps used are characterized by a long service life, high disinfection performance, and low energy consumption Drinking water quality in remote locations without a drinking water connection DVGW-certified drinking water quality Long service life of the system, low operating costs Technical Notes for the DVGW ZERT Drinking Water Treatment SystemAll components are pre-assembled on a mounting plate3-stage filter: Cartridges pre-equipped with filter elementsAutomatic switch with check valve for demand-based pump controlDo not install outdoors if there is a risk of frostThe UV lamp for UV disinfection has a service life of approximately 10,000 hoursThe system requires 230 V / 50 Hz
Drinking water treatment system Rain2Drink OSMOSE
Rain2Drink OSMOSIS - Safe Water Treatment at the Highest Level The Rain2Drink osmosis system from GreenLife reliably treats rainwater or raw water into high-quality, virtually mineral-free purified water—ideal for demanding applications in households, commercial settings, or self-sufficient water supply systems. The system is based on modern reverse osmosis technology and reliably removes dissolved substances, microorganisms, and unwanted contaminants from the water. Thanks to its multi-stage design and automatic control, the system operates efficiently, precisely, and reliably. How reverse osmosis works In reverse osmosis, water is forced under pressure through a semipermeable membrane. Even the finest dissolved substances, ions, and microorganisms are retained in the process. The result is high-purity water of outstanding quality with significantly reduced conductivity. Technology & Design The Rain2Drink osmosis system combines several coordinated components for effective water treatment: Pre-filtration (5 µm) – reliably removes suspended solids and particles High-pressure pump – generates the necessary pressure for membrane filtration Reverse osmosis membranes – central purification unit for removing dissolved substances Automatic flushing – prevents scale buildup and extends service life Intelligent control – monitors pressure, flow, and system status The system is designed for continuous operation and runs fully automatically with integrated safety mechanisms. Your benefits at a glance High-purity water – removes microorganisms, salts, and dissolved substances Efficient reverse osmosis technology – purification efficiency of up to 95% Fully automatic operation – with integrated control and monitoring Durable & low-maintenance – robust components and modular design Versatile application – for residential, commercial, or self-sufficient systems Made in Germany / high-quality system integration Technical Highlights Multi-stage treatment system Continuous operation possible Automatic pressure monitoring and shutdown Integrated flow and conductivity control Maintenance-friendly design with replaceable components Applications Self-sufficient water supply (e.g., off-grid on-site solutions, remote or rural buildings) Treatment of rainwater to utility or drinking water quality Commercial applications and agriculture Technical applications with high water quality requirements Note on water quality For optimal operation, the raw water should be pre-filtered and free of critical substances such as chlorine, oil, or high iron content, as these can impair the membranes.
Rain2Drink OZON drinking water treatment system
Highly effective ozone and UV technology for your own drinking water supply With the Rain2Drink Ozone Drinking Water Treatment System from GreenLife, you can reliably treat collected rainwater into fresh, microbiologically safe drinking water—without any chemical additives. The pre-assembled complete system combines modern filtration, ozonation, activated carbon, and UV disinfection in a compact housing. Ideal for single-family homes, remote buildings, farms, or locations without a reliable drinking water connection. How Rain2Drink Ozone Works Water treatment takes place in four coordinated stages: 5 µm particle filtration A self-cleaning inlet filter reliably removes suspended solids. Ozone treatment in the contact tank An electrolytic ozone generator enriches the water with ozone. Ozone has a strong oxidizing effect, reduces microbial contamination, and ensures the water has a noticeably fresh taste. Granular activated carbon (GAC) The outlet filter converts residual ozone back into oxygen and improves taste and odor. UV disinfection (> 30 mJ/cm²) An instant-on UV unit reliably inactivates bacteria, germs, and viruses immediately before the water exits. The result: hygienically treated drinking water—fresh, clear, and free of chemical additives. Technical Highlights Fully pre-assembled system 4-stage treatment: Filtration + Ozone + Activated Carbon + UV Max. flow rate: 30 liters/minute Max. operating pressure: 6 bar 220–240 V / 50 Hz Energy-efficient operation – ozone and UV deactivated for over 90% of the day Fully automatic control with system controller Backwashable filter units Indoor installation (5–35 °C) Maintenance & Operation UV lamp: Replace after approx. 5,000 operating hours Ozone cartridge: Replace after approx. 2,000 operating hours Automatic filter backwashing Maintenance recommended exclusively by qualified personnel The system is designed for the treatment of rainwater or chemically uncontaminated feed water. If there are uncertainties regarding water quality (e.g., pH value or chemical contamination), a prior laboratory analysis is recommended. Advantages of the Rain2Drink Ozone System ✔ Chemical-free drinking water treatment ✔ Combination of ozone & UV for high disinfection performance ✔ Fresh taste thanks to activated carbon post-treatment ✔ Energy-efficient operation ✔ Fully automatic control ✔ Ideal for self-sufficient water supply ✔ Robust, compact system
Rainwater treatment system with 4,700 l tank and UV drinking water treatment
A complete drinking water treatment system: Includes a rainwater tank, water filter, pump, and chemical-free drinking water treatmentComplete system for self-sufficient drinking water supply Do you want to be self-sufficient in drinking water? Do you want to collect rainwater and turn it into drinking water? Our rainwater system with drinking water treatment offers you an all-inclusive, worry-free package: It consists of a contaminant-free underground tank, a biological water filter, a high-performance pump, a reliable UV drinking water treatment system, and all necessary accessories. This system makes it easy and reliable to supply single-family homes, garden and vacation homes, tiny houses, construction trailers, or cabins with high-quality drinking water. The system is also used in industrial and commercial settings. Please check with the relevant authority (e.g., your local health department) to see if additional municipal regulations apply to the operation of such a system. Do you have questions about the ideal tank size for your roof area and your individual consumption? Feel free to use our rainwater calculator.Main components of the rainwater treatment system Underground tank/cistern 4,700 liters The rainwater tank is made of high-quality, environmentally friendly polyethylene and is 100% recyclable. The material is chemically inert—meaning it has no effect on the quality of the stored water. Compared to concrete or metal tanks, this cistern is significantly lighter and easier to handle. The GreenLife underground tank is 100% watertight. It is delivered ready for connection and pre-assembled: three connections for inlet, overflow, and supply line/empty pipe connection (rubber lip seal DN 110), e.g., KG pipe. The cistern includes a continuously height-adjustable leveling dome and a walkable safety plastic cover. The slip-resistant pattern on the safety cover depicts the “Flower of Life,” a popular decorative motif understood in many cultures as a symbol of cosmic order. We provide a 15-year warranty on the underground tank in accordance with our warranty terms and conditions. Fully Biological Water Filter Biovitor The low-maintenance rainwater filter we developed purifies your water without chemicals and achieves a high yield of top-quality rainwater. Unlike conventional filters, the Biovitor uses the same natural processes for biological self-purification as our local waterways. The Biovitor contains no wear parts, so you can rely on maintenance intervals of up to ten years. UV Drinking Water Treatment System The GreenLife water treatment system, with its compact design and low energy consumption, impresses with its high disinfection performance; treatment is carried out without chemicals. After purification using two sediment filters and one activated carbon filter, any remaining bacteria, germs, or viruses are rendered harmless through UV disinfection. The UV lamp requires minimal maintenance; it should be replaced after 10,000 operating hours (as disinfection performance decreases). The system has a long service life. GUP 46 Clear Water Pressure Pump The high-quality, durable, and powerful GUP 46 submersible pressure pump delivers clear water to the desired locations in the house. As a multistage submersible pressure pump, it is primarily used in building services. A float switch acts as dry-run protection. All water-carrying parts of the pump are made of stainless steel.How the GreenLife Rainwater Treatment System with Underground Tank and Drinking Water Treatment Works Rainwater is directed from the available roof surfaces to the cistern (rainwater tank). Whenever possible, only roof runoff water should be used, as—unlike with courtyard and driveway surfaces—relatively low levels of contamination are expected. If leaves are expected, a gutter screen or similar leaf separator technology must be used. Once the rainwater reaches the cistern, the fully biological Biovitor rainwater filter ensures effective pre-filtration. As soon as a faucet is turned on at a connected outlet in the house, the vacuum water pump in the cistern starts up: The pre-filtered rainwater is transported by the pump to the drinking water treatment system. The rainwater to be treated first passes through two sediment filters (20 μm and 10 μm), then an activated carbon filter, and finally undergoes highly effective UV disinfection. The water is now safe to drink. For your own safety, water quality samples should be tested at regular intervals. The maximum treatment capacity of the drinking water treatment system is 2,000 liters per hour. For more information, see “Downloads” (above as a separate tab). Important Information and Technical Notes Underground tank system with Biovitor Install according to the installation instructions (see the "Downloads" tab).The underground tank is not drive-over in this configuration. Upon request, all underground tanks with a capacity of 2,200 liters or more can be retrofitted with our drive-over kit for passenger cars.When the tank is full, our infiltration cubes, infiltration blocks, or infiltration shafts offer good options for allowing overflowing rainwater to seep into the ground. Rainwater can also be directed in an environmentally friendly manner across the ground surface into an infiltration basin; this is the most eco-friendly option.Drinking Water Treatment UV 2000All components are pre-assembled on a mounting plate.The cartridges, including the filter cartridges of the three-stage filter, are pre-installed. An automatic switch with a check valve controls the pump as needed.Install the UV 2000 inside the building/utility room—not outdoors if there is a risk of frost.The UV lamp for UV disinfection has a service life of approximately 10,000 hours. The lamp can be turned off when you are away.The system requires 230 V / 50 Hz.For your own safety, the treated water should be checked at regular intervals. Installation Instructions Underground Tank & BiovitorPlease follow the installation instructions: Read the instructions thoroughly and in their entirety before installing, connecting, and commissioning this product. Pay close attention to all safety instructions—failure to do so will void all warranty and guarantee claims. Pump, UV Drinking Water Treatment Operating Instructions for Pump GUP 46 Operating Instructions for UV Drinking Water Treatment Maintenance The entire system must be inspected regularly for leaks, cleanliness, and stability. Maintenance of the underground tank system should be performed approximately every 10 years. The special UV lamps should be replaced after 10,000 operating hours; otherwise, the disinfection rate will decrease. The filter cartridges for the sediment filter and the activated carbon filter should be replaced as needed, but at least every 4 months. (You can order the replacement filter set for up to one year of water treatment in our shop.) In addition, for your own safety, quality samples of the filtered water should be taken and tested at regular intervals.