Rainwater Harvesting – Systems & Technology for Homes, Gardens & More
Rainwater harvesting is a sustainable and cost-effective solution for homes, gardens, and properties. Whether for garden irrigation, toilet flushing, washing machines, or even treated drinking water, the right technology allows rainwater to be used safely and efficiently in a wide range of applications.
GreenLife provides everything needed for modern rainwater harvesting systems, including complete rainwater systems, underground tanks, filters, pumps, and drinking water treatment solutions. Our products are designed to help you collect, store, filter, and use rainwater effectively while reducing dependence on mains water supplies.
Rainwater is a free and widely available resource with naturally high water quality. Make the most of this valuable resource with GreenLife solutions that promote greater self-sufficiency, lower water costs, and responsible environmental stewardship.
Garden system AKTION with 4200 l flat tank
Rainwater harvesting system for the garden: “AKTION” garden system with a 4,200-liter rainwater tank Easy-to-install complete system for garden irrigation Our “AKTION” rainwater harvesting system is an all-inclusive package featuring a practical flat tank for easy installation underground. The high-quality rainwater tank is made of eco-friendly polyethylene (PE) and is 100% recyclable. The ready-to-connect complete set includes everything from the rainwater cistern to the submersible pressure pump—all the small and large components you need for rainwater harvesting in your garden. Collect precious rainwater in the underground rainwater tank during wetter times and use it for garden irrigation during drier periods. Do you have questions about the ideal tank size for your roof area and your individual usage? Feel free to use our rainwater planner. How does garden irrigation work with the "AKTION" garden system? Rainwater flows from the roof through the gutter grate (which acts as a pre-filter), then down the downspout and through the inlet surge arrester into the flat tank. The automatic submersible pressure pump located in the tank is connected to the water connection box via a hose that runs through a conduit. When the valve in the box is opened, the pump starts automatically. Closing the valve causes the submersible pressure pump to shut off on its own. You can install the water connection box wherever is convenient for you. When the cistern is full, the rainwater drains off via the overflow siphon. The barrier integrated here prevents small animals from entering. If there is a risk of frost, the pump must be disconnected from the power supply and the valve on the water connection box must remain open. You can find all further information under the DOWNLOADS tab and in the DOWNLOAD AREA.Who is the "AKTION" irrigation system suitable for? The complete set is suitable, on the one hand, for anyone who wants to keep the effort involved in installing their tank to a minimum. On the other hand, it is suitable for those who value the convenience of water withdrawal at a water connection box. Is the "AKTION" garden system drive-over? The flat tank is not drive-over in this form. However, upon request, all flat tanks can be retrofitted with our kit for car drive-over capability. The resulting wheel load is 600 kg per wheel—sufficient for standard cars and small vans. In this case, the cistern must have a soil cover of at least 60 centimeters. Where does the water from the overflow go when the tank is full? The excess rainwater can be discharged into the sewer system. However, this may incur fees. Additionally, the water does not return to the groundwater in a natural way when discharged this way. The most environmentally friendly option is (trough) infiltration through the soil surface. However, this is often not structurally feasible. With our infiltration elements, we offer a good way to allow overflowing water to infiltrate: Using infiltration cubes, infiltration blocks, or infiltration shafts, rainwater is guided through the soil back into the groundwater. Do I need a rainwater filter? This rainwater harvesting system generally does not require an additional rainwater filter. The gutter screen already provides sufficient coarse filtration. However, if you place particular importance on extra-clean water in your garden, you can install our fully biological Biovitor rainwater filter for flat tanks in all flat tanks. Installation and Maintenance Instructions for the 4,200-Liter Flat Tank Please follow the installation instructions (see also under “Downloads”): Before installing, connecting, and commissioning this product, read the instructions carefully and in their entirety, and observe all safety instructions. Failure to do so will void all warranty and guarantee claims. Additional features and notes Alternative equipment options are available for the tank; see “Accessories” below. The tank is UV-resistant and opaque. Possible connection sizes: DN 110 Our tank comes with 3 pre-installed DN 110 lip seals. Additional connection points are available and can be drilled and used as needed. The expansion dome is infinitely extendable from 380–580 mm and can be tilted up to 5° for optimal terrain adaptation. The tank has a 600 mm (access) opening. Do you have questions about this tank, its installation, or setup? Our customer service team is available to provide expert assistance. Please contact service@greenlife.de or our customer service at 0385 77 337 72 (weekdays 8 a.m.–4 p.m.). The entire system must be checked regularly for leaks, cleanliness, and stability. Maintenance of the entire system should be performed at intervals of approximately 5 years—every 10 years if a GreenLife Biovitor is used in accordance with the instructions. During this process, the system components must be cleaned and checked for proper function. Maintenance should be performed as follows:Empty the tank completelyRemove solid residues with a soft spatulaClean surfaces and internal components with waterCompletely remove dirt from the tankCheck that all internal components are securely fastened
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.
Floating suction filter
DetailsWater extraction in clean areasSinkable and suspended solids are not drawn in5 m 1" suction hose with clampsBrass check valveSuction filter
Garden tap, antique
Antique Garden Water Faucet – Stylish Water Access in the Garden Rustic stone look. Practical water collection. Charming integration. The antique-style garden water spout offers a decorative and functional way to draw rainwater directly in the garden. It is freestanding and available in a stylish granite look in several colors—ideal for anyone who wants to combine design with practicality. Your benefits at a glance Antique stone look – harmoniously integrated into natural and garden areas Freestanding – quick to install and secure to set up Child-safe – Sturdy faucet includes a removable key UV- and weather-resistant PE plastic – durable, weatherproof material Compatible with rainwater harvesting – easy connection to tanks, storage units, or cisterns Made in Germany – high-quality workmanship, robust and low-maintenance Even easier for you: service & consultation included Expert advice on optimal placement, connection, and combination with pumps or tanks Reliable delivery within Germany Spare parts service – faucets, wrenches, and gaskets available for reorder even long-term Sustainability with responsibility Made from single-material, 100% recyclable polyethylene, the water dispenser is free of plasticizers and PVC. It supports rainwater harvesting and conserves natural resources—a stylish solution with a sense of responsibility. Applications Private gardens and patios – attractive and functional Community and school gardens – durable and child-safe Landscaping and horticultural projects – decorative with practical benefits Green spaces – durable water feature with design appeal Do you have questions? We’re here to help. Our customer service team is happy to assist you with any questions regarding installation, technology, and rainwater harvesting. Phone: 0385 / 773370 Email: info@greenlife.de
125 mm hole saw set with 2 DN 100 rubber lip seals
What's Included 1x 125 mm hole saw with centering drill bit 2x rubber lip seal DN 100 (Ø110)
125 mm hole saw set with 3 DN 100 rubber lip seals
What's Included 1x 125 mm hole saw with centering drill bit 3x rubber lip seal DN 100 (Ø110)
Activated carbon filter cartridges, set of 3
Activated Carbon Block 9 7/8" x 2 1/2"For the GreenLife pre-filter for rainwaterFor UV systemsA filter cartridge can be used for up to 4 months; after that, it must be replaced - Filter set for 1 year - or as needed- consists of 3 pieces
Built-in filter
DetailsFor filtering rainwater. The filter is installed in the dome of the tank. It has 4 inlets in DN100 (Ø110) / DN150 (Ø160). The vertically arranged outlet to the inlet stilling basin is also designed in DN100 (Ø110) / DN150 (Ø160). For maintenance, the filter basket is removed using the lifting rod.Technical DataMaterial: PolyethyleneWeight: 5 kgDiameter: 480 mmHeight: 575 mmConnections: DN100 (Ø110) / DN150 (Ø160)
Built-in tank filter
DetailsFor filtering rainwater. The filter is installed inside the cistern or tank directly between the inlet and overflow. The height difference between these connections is at least 30 mm. The filter contains a slotted screen with a mesh size of 0.8 mm, through which purified water flows vertically into the tank. During heavy rain or when the water level is very high, dirt particles are removed from the surface of the screen. Thanks to this self-cleaning effect, maintenance is less frequent than with basket filters. Suitable for surface drainage up to 160 m². A hook for lifting the filter is included.Technical Data Material: PolyethyleneWeight: 2.35 kgLength: 500 mmWidth: 195 mmHeight: 350 mm
Cistern filter basket 300
DetailsFor filtering rainwater. The filter features a filter basket with a mesh size of approx. 1 mm. Rainwater is fed in via a 300 mm long PE pipe DN100 (Ø110). The pipe can be shortened. The cistern filter basket is easy to retrofit and can be removed effortlessly for cleaning.Technical DataFilter basket material: PolyethyleneFilter basket height: 240 mmFilter basket diameter: 300 mm
Coarse dirt filter basket
DetailsFor filtering rainwater. The filter basket is suspended by its stainless steel chain in the tank or cistern below the inlet (which should have an 87° elbow). It removes coarse dirt particles (> 1.5 millimeters) from the incoming rainwater and must be emptied at regular intervals.Technical DataDiameter: 300 mmHeight: 240 mmMesh size: 1.3 mmFilter basket material: Polyethylene (no additives)
Complete set for green space irrigation for up to 200 m² area
Fully automatic irrigation kit for efficient and easy garden watering Do you want to water your garden or lawn efficiently and according to its needs without lifting a finger? Once installed and programmed, our automatic irrigation kit with pop-up sprinklers waters your lawn easily and reliably exactly when it’s best for you. The kit is also easy to install. Water your garden while you sleep and save plenty of water in the process! Who is the green space irrigation kit suitable for? Our irrigation kit is suitable for a lawn or garden area of up to 500 m². It is particularly appealing to gardeners who do not want to or cannot actively manage the watering of their green spaces. The most sensible and environmentally friendly option is to draw the required water from a rainwater cistern using a water pump. However, drawing water from the mains is also possible. How does the fully automatic irrigation system work?The irrigation kit is easy to install with a little DIY skill. Please follow the included installation instructions. Installation essentially consists of three steps: placing the components in the ground, assembling the individual elements, and programming the controller. Decide where, when, and how much your lawn should be watered, then sit back and relax: From now on, our fully automatic garden irrigation kit takes over! The most important components of the garden irrigation system Control unit Control units and timers are the heart of every irrigation system. They offer a simple, flexible, and reliable solution for garden and lawn irrigation. Our controller with LCD display allows for quick and easy programming of different zones, start times, run times, and watering days. There is a separate start button for simple manual watering. The controller is dust- and waterproof. Wireless Rain Sensor When it rains and your lawn doesn’t need to be watered, the rain sensor comes into play. It sends a signal to the controller, which then stops or adjusts the watering. Valve Box The robust valve box provides optimal protection for your irrigation system’s valves against the elements, ensuring a long service life and safe operation. The spacious top access makes maintenance easier, while pre-punched openings for the pipes reduce installation time. An integrated slot allows the lid to be lifted easily. Beveled corners protect the lid from damage by lawn mowers. The box is also made from 100% recycled HDPE. Pop-up Sprinklers Our pop-up sprinklers offer a reliable solution for effective garden irrigation. Thanks to the strong stainless steel return spring, the pop-up mechanism retracts safely, while the simple adjustment mechanism allows for quick and precise alignment of the spray direction. A precise flushing system ensures that debris is kept out of all soil types. All components are accessible from above without the need for special tools. The robust housing made of UV-resistant plastic guarantees a long service life.
Complete system GRM 2.0
DetailsSystem for collecting clean rainwater for use in washing machines, garden irrigation, and toilet flushing. Rainwater is collected in an underground tank made of high-quality plastic, drawn in by a self-priming centrifugal pump, and pumped to the points of use. If there is a shortage of rainwater, a solenoid valve switches to a direct supply of drinking water.Scope of deliveryUnderground tank made of high-quality polyethyleneSliding dome with plastic safety cover (walkable up to 200 kg)Biovitor with inlet flow regulatorOverflow siphon with small animal protectionRainwater manager GRM2.0 with multi-stage self-priming centrifugal pump for drinking water replenishmentFloat switch with 20 m connection cable and adjustment weightLabeling materials
Complete system U 1.1
DetailsSystem for collecting clean rainwater for use in washing machines, garden irrigation, and toilet flushing. Rainwater is collected in an underground tank made of high-quality plastic and pumped to the draw-off points using a submersible pressure pump. If there is a shortage of rainwater, a solenoid valve switches over and the tank fills with potable water.Scope of deliveryUnderground tank made of high-quality polyethyleneSliding dome with safety cover (walkable up to 200 kg)Biovitor with inlet flow regulatorOverflow siphon with small animal protectionGUP 46 clear water pump with floating suction filterRainwater manager U1.1 for wall mounting for drinking water replenishmentFloat switch with 20 m connection cable and adjustment weightLabeling materials
Diaphragm automatic switch 54
Genuine replacement diaphragms made of rubber and plastic for the 54 automatic transmission.
Drinking water make-up DN 13 (connection thread 3/4")
DetailsDevice for refilling the cistern with drinking water. As the water level in the rainwater cistern drops, a solenoid valve is opened via the float switch and drinking water is added. Scope of delivery Solenoid valve DN 13 with connection cable and plug 3/4" threaded connection Float switch with 20 m cable Adapter plug and weightBall valveFlexible reinforced hoseHigh-pressure pipe, 30 cm
Drinking water make-up DN 25 (connection thread 1")
DetailsDevice for refilling the cistern with drinking water. When the water level in the rainwater cistern, the basement tank, or the service water tank of a graywater recycling system drops, a solenoid valve is opened via the float switch and drinking water is added. Technical Data Height: approx. 875 mmDiameter: approx. 110 mmSolenoid valve with connection cable and plug Connection: 1" thread Float switch with 20 m cable Adapter plug and weight
Filter cartridges, 10µm (set of 3)
DetailsSediment filter/filter cartridge, polypropylene string, 20 µm Filter set for 1 year—or as needed—consisting of 3 pieces A filter cartridge can be used for up to 4 months; after that, it must be replaced 9 7/8" (inches) x 2 1/2" (inches)
Filter cartridges, 20µm (set of 3)
Details Sediment filter/filter cartridge, polypropylene cord, 20 µm Filter set for 1 year—or as needed—consisting of 3 pieces A filter cartridge can be used for up to 4 months, after which it must be replaced 9 7/8" (inches) x 2 1/2" (inches)
Filter screen with bracket (for tank-mounted filter)
Replacement part for the in-tank filter Filter media material: Polypropylene Handle material: Stainless steel Color: blue
Fixed garden
Garden Irrigation System: "fix" Garden System Easy-to-install complete system for garden irrigation Our "fix" garden system is an all-inclusive package with a practical flat tank for easy installation in the ground. The spout allows for simple and back-friendly water withdrawal. The ready-to-connect complete set includes all the components you need for easy garden irrigation. Do you have questions about the ideal tank size for your roof area and your individual usage? Feel free to use our rainwater planner. Scope of delivery 2,000-liter flat tank made of high-quality polyethylene, including pre-assembled DN 110* connectionsExpansion dome, telescopic, diameter DN 600 mmPlastic safety cover (walkable up to 200 kg) with "Flower of Life" embossing** Inlet flow regulator (installed) Garden water spigot with faucet (chrome-plated) 20.4 meters of gutter grating with filter function 10-meter rainwater pressure hose GAP X120 submersible pressure pump, including side suction, integrated automatic switch, dry-run protection, 15-meter connection cable, and additional accessoriesRainwater labeling set15-year warranty on the underground tank in accordance with warranty terms * Three connections for inlet, overflow, and supply line/empty pipe connection (rubber lip seal DN 110), e.g., KG pipe ** The slip-resistant pattern on the safety cover depicts the “Flower of Life”; it is a popular decorative element understood in many cultures as a symbol of cosmic order. How does garden irrigation work with the "fix" garden system? Rainwater flows from the roof through the gutter grate into the gutter and then via the downspout and the inlet surge arrester into the underground tank. (Multiple downspouts can also be connected.) The automatic submersible pressure pump located there is connected to the dispenser via a hose that runs through a conduit. When the faucet on the water dispenser is turned on, the pump starts automatically. When the faucet is turned off, the submersible pressure pump shuts off on its own. You can install the water dispenser wherever is convenient for you. When the cistern is full, the rainwater drains off via the overflow siphon. The integrated barrier prevents small animals from entering. If there is a risk of frost, the pump must be disconnected from the power supply. In addition, the water tap should remain open. You can find all further information in the download area. Who is the "fix" garden irrigation system suitable for? The complete set is suitable, on the one hand, for anyone who wants to keep the effort involved in installing their tank to a minimum. On the other hand, it is suitable for those who value the convenience of drawing water from a tap—for example, to fill a watering can. Is the "fix" garden system drive-over? The flat tank is not drive-over in this form. However, upon request, all flat tanks can be retrofitted with our kit for car drive-over capability. The resulting wheel load is 600 kg per wheel—which is sufficient for standard cars and small vans. In this case, however, the cistern must have a soil cover of at least 60 centimeters.Where does the water from the overflow go when the tank is full? The excess rainwater can be discharged into the sewer system. However, this incurs fees. Another disadvantage: The water does not return to the groundwater naturally. The most environmentally friendly option is (trough) infiltration through the soil surface. However, this is often not structurally feasible. With our infiltration elements, we offer a good way to allow overflowing water to infiltrate: Usinginfiltration shafts or infiltration cubes, rainwater is guided back into the groundwater through the soil. Do I need a rainwater filter? The complete garden irrigation set generally does not require a rainwater filter. However, if you place particular value on extra-clean water in your garden, you can install our fully biological Biovitor rainwater filter for flat tanks in all flat tanks. Important: Delivery Process Our underground tanks are always delivered by a freight carrier. If accessories are shipped separately, this is done via a parcel service. The freight carrier will contact you 1–2 business days before the actual delivery date to clarify final details. For this, we need your phone number (ideally a cell phone number). We generally deliver cisterns or larger products by truck. The truck is unloaded at the curb. Please note, however, that suitable equipment (e.g., a mini-excavator) must be available on-site to move the cistern to the installation location, or, depending on the size, 2–3 people must be available. Please refer to the “Technical Data” table for the specific cistern for the exact weight. In some cases, such as double or multi-tank systems, delivery may be made by semi-trailer truck. Therefore, please inform us immediately after placing your order if the desired delivery address is NOT accessible to a 40-ton truck. Otherwise, we cannot accommodate this during delivery! Please also note that no deliveries are made on Saturdays, Sundays, or holidays.