Underground Tanks

  • Q: Can I clean my underground tank?

    A: It is possible to clean an underground tank, by literally climbing into it and scrubbing with a brush and any liquid dishwashing soap, etc. The opening of the tank at the top is 410mm, which is wide enough for a person with a slight build to climb through.

  • Q: Can I use my underground tank to harvest rainwater?

    A: Yes - If the tank is used for storage of rainwater from the roof, the water can be filtered through a first flush diverter before entering the tank. See installation instructions for an underground tank here.

  • Q: What is the use of the 6000L underground tank?

    A: The 6000L underground tank has many uses: it can be used to store greywater and rainwater , it can also be used as a conservancy tank that can be pumped out and/or septic tank. It is the answer when space and accessibility are an issue – especially in an urban environment. See installation instructions for our 6000lt underground tank here.

General Maintenance

  • Q: My tank is damaged, how do I get it repaired?

    A: It can be repaired by using a hot air gun to weld a piece of the same plastic as the tank over the split/crack on the inside and outside of the tank.

  • Q: How do I keep my tank clean?

    A: Depending on the size of the tank, when empty (and if it is not mounted on a tank stand etc), you can simply turn the tank on its side (on grass) and then using a broom/mop and some sunlight dishwasher you can easily clean it. Just make sure to hose out all of the soap when done.

Municipal Back Up

  • Q: How to keep the water in my JoJo fresh?

    A: What tends to happen with long term storage is that water goes “flat”, to prevent that you can aerate your water. This is achieved by pouring water form one container to another a few times, at a slight height to re-introduce the air. You could also draw up a roster for your tank and then rotate/circulate the water a set interval by using that water for a few days to get the water level down inside your tank, where after you can fill it up with fresh municipal water (you could wash your car, fill up the pool, water the garden etc).

  • Q: How long can municipal water be stored in a JoJo tank?

    A: In ideal circumstances municipal water can be stored inside a JoJo tank for a long time, because it is chlorinated and safe to store for extended periods. Just be sure that the tank is properly sealed and that it is a water tank (with the food-grade black inner lining). It is recommended that the water is run once every two weeks to rotate the water and to ensure that the best quality water is available.

  • Q: How does the pump sense when municipal back up has failed?

    A: The pressure controller (built in) senses a drop in pressure and starts the pump operation, i.e.pumping water from the tank into house.

  • Q: What size tank is ideal for municipal back up?

    A: How much water is needed for municipal back up is dependent on two main factors, how many people will be utilising the water and how long you want the back up to last. The average South African uses 150 litres of water per day. Size of tank required = litres per day x total days back up required.

Rainwater Harvesting

  • Q: Maintenance requirements

    A well designed system needs little maintenance but never more than a pool would.

  • Q: Would it work with any type roof?

    A: Thatch is about the only roof surface not suitable for rainwater harvesting, the others just vary in efficiency. Pitched or flat makes no difference.

  • Q: Does the tank have an impact on the quality of the water?

    A: All JoJo tanks are lined with an FDA approved food grade carbon black liner that prevents algae growth and ensures water stays fresher for longer. A JoJo tank does not cause any damage to the water, the quality of the incoming water however may very well be an issue. Please remember that water collected from the roof of a building will not be clean. Should you need to drink the water in an emergency, it must be purified or boiled before it will be fit for human consumption. For irrigation purposes however, the water would be perfect.

  • Q: What pre-filtration/accessories do I need?

    A: Basic rainwater harvesting installations only incorporate a mesh at the top of the tank (underneath the lid) to keep out smaller debris, insects, mosquitoes etc. Additionally you can incorporate a rain head/leaf eater (removes larger debris) and a first flush diverter (takes off initial dirty water for every rainfall, improving the quality of water). Depending on your type of setup and what you plan on using the water for, you can decide what works best for you.

  • Q: Do I need to change my gutters or make alterations to my roof?

    With careful planning and execution, existing gutters require very few changes or alterations.

  • Q: Do I need a base for the tank?

    A: Keep in mind the base needs to be flat, level & secure. If a proper foundation is not available you will have to build a concrete plinth (see (see Rainwater Harvesting installation instructions and base size requirements )

  • Q: What size tank should I use?

    A: Every installation is different. We would suggest you buy the biggest tank that space, budget and practicality allow (see Rainwater Harvesting pre-installation instructions). The biggest downfall of rainwater harvesting systems is lack of storage capacity. The simplest way to calculate what size tank would be sufficient is by taking a look at the size of your roof, i.e. Roof p/m2 50 to 100 = 750L to 2200L and 200 to 400 = 2500L to 10 000L

  • Q: DIY vs Professional Installer (cost vs benefit), what is better?

    A: This depends on the scale of the project, small projects are perfect for the DIY guy, but larger projects are too risky to get wrong, get a pro.

Water Storage Solutions

  • Q: What is a Fully Integrated System?

    A: The installation of a tank that is filled automatically when mains water is available to a pre-determined minimal level, with the remaining space available to store rainwater. This water is filtered/sterilised and utilised for full domestic water supply.

  • Q: What is Municipal Back Up?

    A: The installation of a tank that is filled automatically when mains water is available. This water can then be utilised in the event of a cut off from mains supply.

  • Q: What is Rainwater Harvesting?

    A: The installation of a tank that is filled automatically when it rains. This will require the installation of suitable guttering and piping to transport rainwater to the tank. Read more about Rain Water Harvesting here

Storing Water Inside My JoJo

  • Q: How long can municipal water be stored in my JoJo tank?

    A: In ideal circumstances municipal water can be stored inside a JoJo tank for a long time, as municipal water is chlorinated and safe to store for extended periods. Just be sure that the tank is properly sealed and that it is a water tank (with the food-grade black inner lining). It is recommended that the water is run once every two weeks to rotate the water and ensure that the best quality water is available.

  • Q: How to keep the water inside my JoJo fresh?

    A: What tends to happen with long term storage is that water goes “flat”. To prevent that you can aerate your water. This is achieved by pouring water form one container to another a few times, at a slight height to re-introduce the air. You could also draw up a tank roster to rotate/circulate the water a set intervals by using that water for a few days to reduce the water level in your tank. Thereafter, you can refill with fresh municipal water (you could wash your car, fill up the pool, water the garden etc

  • Q: Is water stored in a JoJo water tank safe to drink?

    A: All JoJo water tanks are lined with an FDA approved food grade carbon black liner that prevents algae growth and ensures your water will stay fresher for longer. A JoJo tank does not cause any damage to the water; the quality of the incoming water however may well be an issue. Please remember that water collected from the roof of a building will not be clean. If in emergencies you need to drink the water from the tank, it must be purified. The best way to purify small amounts of water is to bring it to a rolling boil for a minimum of one minute, Thereafter it will be fit for human consumption. For irrigation purposes, however, the water would be perfect.

Septic and Conservancy Tanks

  • Q: Can I link/connect septic tanks?

    A: If you want to use the tanks for water storage, it will be possible to connect two or more tanks. However, if used as septic/conservancy tanks, we strongly advise against it as the purpose of the septic tank is to separate solids from liquid. Even if the tanks are being used as conservancy tanks that can be pumped out, the tanks should not be joined and pumped out from one place only. If liquids are pumped out from one outlet pipes will quickly become blocked, creating a huge problem.

  • Q: Can water from basin and bath go through the septic tank?

    A: No, soap water or chemicals cannot be used as this will kill the bacteria and stop the normal functioning of the tank. “Friendly" chemicals can be obtained from most co-ops or shops that specialise in outdoor products.

  • Q: Which size septic tank should I buy?

    A: The volume you would require will depend on how often the tank will be pumped out (if it is a conservancy) and how many people will use the facilities on a daily basis. 1 x hand / face wash = ± 1 - 4 lt water 1 x toilet flush = ± 8 - 12 lt water 1 x bath = ± 80 - 150 lt water 1 x 5-minute shower = ± 80 lt water 1 x 5kg load of laundry = ± 80 lt water (depends on model of washing machine, etc)

  • Q: What is the difference between a septic/conservancy tank?

    A: A septic tank: comes standard with fittings and the black water runs into a french-drain to soak away into the ground over time. Conservancy tank: made to be pumped out by a honey-sucker or submersible pump which means that this tank has to be strong enough to withstand the pressure of the soil (when it is empty). It all depends on which you prefer and what you plan on using it for.

Horizontal & Transporter Tanks

  • Q: What is the recommended tie-down method for a Horizontal tank?

    A: It is recommended that you use 2 x five ton straps tied to the body of the truck, this will be sufficient to hold the horizontal tank in place. A steel frame all around the tank will further eliminate any chance of the tank slipping.

  • Q: Can the horizontal tanks be placed directly onto level ground as a rainwater tank?

    A: The tank is definitely suitable for rainwater harvesting, as long as you order it with a black lining. The black lining ensures that the water stays fresh much longer as it prevents algae growth. No tank may be placed on bare ground, since it is not stable and the tank will be damaged by the uneven surface. All tanks must be placed on a solid foundation (a smooth and level concrete slab is ideal) of no less than 85mm thick. It is very important that the surface is level and smooth to ensure a robust base for the tank.

  • Q: Do you have tanks that can be fitted on trucks?

    A: JoJo Tanks manufactures a wide range of horizontal water and chemical tanks (from 240L to 5500L) suitable for use in agriculture, chemical and other industries. A horizontal tank is also known as a transporter tank and can be fitted onto the back of an LDV or a truck to build a water-car.

Additional Product Information

  • Q: What are your JoJo tank stands made of?

    A: The JoJo Tanks’ stands, made of mild steel, were purposefully designed by structural engineers and are built by our technical team. The stands are painted with red oxide to prevent rust. * If you want your tank stand galvanized you are more than welcome to do so yourself, just be sure to state that on your order, in which case they will not be painted with red oxide to facilitate the galvanizing process.

  • Q: Can the JoJo tank alert turn the pump, which keeps the tank full, on or off? Can the Tank Alert be used in a reservoir?

    A: NO. The wireless JoJo Tank Alert contains an electronic gauge that accurately and reliably measures the water level in your tank and transmits the information to a receiver located in your home. Communication distance to the receiver is typically greater than 200m (within line of sight) and measurement resolution is down to 1cm. It is also only able to measure the depth of the water up to 3m. The same is valid for a reservoir which typically would be deeper than 3m.

  • Q: What is the difference between the JoJo Slimline rainwater harvesting tank and the Slimline buffer tank:

    A:  The tank with the standard inlet/overflow at the top and the outlet at the bottom, as well as an additional fitting for the tap. Also included in the price is a tap and a stainless steel mesh/sieve (fitted beneath the lid to assist in keeping out leaves, mosquitoes, etc). The Slimline™ buffer tank includes: The tank with the standard inlet/overflow at the top and the outlet at the bottom. The tap and sieve are not included.

  • Q: Why does the 4500L tank say "under roof"?

    A: The 4500L tank has the same footprint as the 5000L. However, the ± 60mm variation in height makes a huge difference when fitting it under the downpipe of the gutter of a house with a low roof, hence the reference to "under roof". In the trade this has become the unique description for this specific product.

  • Q: What is the difference between vertical and horizontal tanks and how does one use them?

    A: Vertical tanks are used for storage and horizontal tanks for transportation, and due to their design differences the tanks cannot be used interchangeably. The type of tank required will depend on what the tank will be used for. Vertical Tanks: Are the familiar stationary, upright tanks that need to be installed on a flat, level surface and are used for the storage of water, fertilizers, chemicals and other liquids. Horizontal Tanks: Can be fitted onto the back of a LDV or a truck and can also be used to build a water-car. It is ideal to transport water to dry, rural areas or building sites. The chemical tanks are often used to transport and store fertilizers, diesel, molasses, etc.

  • Q: Is it safe to store petrol/diesel in your tanks?

    A: NO PETROL can be stored in a JoJo tank. However, it is safe to store diesel in any of our chemical medium tanks (based on the material we use), although with the price of diesel in mind, we would suggest that you consider using a chemical heavy duty.

  • Q: What is the maximum temperature that JoJo tanks can handle?

    A: A JoJo tank is designed to withstand the full range of temperatures that occur throughout South Africa. However, liquid stored inside the tank should not exceed 40°C.

  • Q: What is the maximum pressure that JoJo tanks can handle?

    A: A JoJo tank cannot handle any additional pressure (internal or external). That is why JoJo Tanks offers a 6000lt underground tank specifically designed to be installed below ground level. For something smaller, you can use any of our heavy duty conservancy tanks varying from 1250lt to 2500lt. Although these tanks are normally used as septic tanks, they can also be used for rainwater or greywater, in which case the tank has to be a Heavy Duty/Conservancy to ensure it does not collapse when it is empty. If any other tank is installed below ground level a retaining wall is required.

  • Q: What does (w) (m) and (h) mean and what is the difference?

    A: (w) - abbreviation for water (SG 1) (m) - abbreviation for medium (SG 1.4) (h) - abbreviation for heavy duty (SG1.6)

  • Q: What does S.G. mean?

    A: Density of water : When considering which plastic tank to use, it is important to know that they are rated based on the “specific gravity’ (SG) of the substance they are designed to hold. In other words, tanks with a higher specific gravity rating will have thicker walls and will be designed for heavier duty use when compared to another tank made from the same material but with a lower specific gravity. JoJo tanks are specifically designed for each intended purpose and it is necessary to specify the intended use prior to making a purchase. Specific gravity (SG) is the ratio of the density* of a substance to the density of a standard, usually water for a liquid or solid, and air for a gas. *Density: mass of the same unit volume 1 lt water = equals 1 kg of weight 1000 lt water = equals 1 ton of weight 2500 lt water = equals 2,5 tons of weight

Material use / Guarantee

  • Q: Can I drill additional holes in my JoJo Tank?

    A: Installation and maintenance of and JoJo tank should be in accordance with the manufacturer’s specifications. If you drill any additional holes or make any alterations to the tank whatsoever, the integrity of the tank is jeopardized, and your guarantee will fall away.

  • Q: Are JoJo Tanks BPA free?

    A: Yes – we use the best food-grade quality virgin LLDPE for our products and our tanks cannot cause any damage to water. Our tanks are lined with an FDA approved food grade carbon black lining and are UV resistant.

  • Q: Are JoJo tanks UV resistant?

    A: Yes they are and this UV resistance gives them their durability in harsh SA weather conditions.

  • Q: What is the estimated life expectancy of a tank?

    A: JoJo Tanks have an 8 year guarantee on material and workmanship. However properly installed JoJo tanks have been known to exceed a lifespan in excess of 20 years.

  • Q: What material is used to manufacture JoJo products?

    A: Base polyethylene with pigment anti-oxidants and UV stabilizers to ensure an extended service life. JoJo Tanks uses the best food-grade quality LLDPE (linear low-density polyethylene) for all our products.

Preference & Availability

  • Q: Can I paint my tank?

    A: Yes – just be sure to paint the tank with a plastic primer (obtainable from all co-ops and leading hardware stores) first, and thereafter with a good quality paint, e.g. Micatex that would shrink and expand simultaneously with the tank in all weather condition

  • Q: Are JoJo dog kennels available in the same colour range as the JoJo tanks?

    A: Yes, but please make your colour preference clear when ordering your kennel. The full colour range is on the website. Also remember that the marble-finish colours carry a premium of approximately 10% over the regular solid colours available.

  • Q: Are taps included and what is needed additionally to install a tap?

    A: A variety of taps, e.g. plastic, lockable solid brass or nickle plated can be ordered separately at additional costs and a 40/20 reducer is also needed to fit to the tank.

  • Q: Are fittings included in the price?

    A: All standard fittings on tanks are included in the price. *A special diesel fitting is required for all oil-based products.

  • Q: Where can I buy a JoJo tank?

    A: JoJo Tanks has factories in Pretoria, Groblersdal, East London, Worcester, Hopetown, Glencoe and Camperdown and depots in Mthatha and Port Elizabeth. Our main distribution is through the major reputable hardware stores and chains throughout the country as well as leading agricultural co-operations. Contact details for our distributors here.

  • Q: Do you deliver to the public?

    A: Our main distribution is through the major reputable hardware stores and chains throughout the country as well as leading agricultural co-operatives. Prices vary from store to store. Delivery lead times to your store of choice will be 3 to 10 working days depending on stock availability Regrettably JoJo Tanks cannot deliver to private customers, customers in residential areas or customers on farms and small holdings Find out which distributors are in your area, see our list of distributors here.

  • Q: What colours are JoJo Tanks available in and are there additional costs involved?

    A: JoJo manufactures water tanks in various colours and this can be specified when ordering. Clients can choose from the following standard colours at no additional cost: Water tanks : JoJo green, bushveld green, khaki, red, royal blue, winter grass. Chemical tanks: Standard - natural (white), light blue, light yellow and light green. The marble-finish colours carry a premium of approximately 10% over the regular solid colours available. View full colour range here

Installation

  • Q: The installation of a septic tank and how it works.

    A: Complete installation instructions can be viewed here

  • Q: Pump vs Elevation as pressure solution?

    A: In order to get enough pressure by using elevation, a tank stand with a height of at least 3m is required. This will provide pressure of approximately 0.3 bar. Standard municipal pressure is 4 bar (depending on the area). We would advise the use of a pressure pump (if possible) which provides 4 to 6 bar pressure and is more cost effective.

  • Q: Can we build our own tank stand/structure out of gum poles, wood etc?

    A: We recommend that you install the JoJo Tanks tank stands as they were designed by structural engineers. We are in no position to advise on a structure of any other kind of material.

  • Q: Can someone install my tank for me?

    A: Yes – On our website under installation you will find a list of preferred installers who are equipped and capable to install our tanks. Kindly contact any of them in your area to recommend and quote an installation that will suit your specific requirements.

  • Q: Basic installation instructions for vertical tanks

    A: The tanks should ideally be installed on a 100% level solid concrete slab of no less than 85mm thick. We recommend that you compact the ground thoroughly to ensure a flat and stable surface. The slab should be at least 100mm wider than the diameter of the tank to ensure there is no overhang. Tanks can also be installed on our steel tank stands purposefully designed by our structural engineers. The tank stand heights vary between 1.5 meter, 3m, 4.5m, 6m and 9m high. Spaces between beams should be no more than 50mm apart. For detailed installation guidelines, please see here

  • Q: What size tank should I buy?

    A: Every installation is different, it depends on what you plan on using the water for, the space you have available etc. We would advise you buy the biggest tank that space, budget and practicality allow.

Where’s the nearest JoJo Tanks supplier?

Find the JoJo Tanks team closest to you.

Is my water storage sustainable?

View our cost-effective and eco-friendly solutions.

Is my tank warrantied?

Read more about our standard 8-year warranty.

Download our product brochure 

View detailed specs on our range of products.