Practical safety and maintenance guidance for anyone storing water above ground on a UK site, covering hygiene, ground preparation, weather exposure, fittings and what to do if a tank fails.
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This 500 litre slimline water storage tank offers generous capacity for domestic, commercial and agricultural sites where space is tight.
- Space saving slimline design fits neatly against walls and fences
- Made from UV stabilised MDPE
- Baffled construction adds strength and reduces water movement
- Suitable for potable water storage and rainwater harvesting
- One piece moulded for strength and reliability
- Works horizontally or vertically depending on the space available
500 Litre Slimline Water Storage Tank
Code
GW100006
This 500 litre slimline water storage tank offers generous capacity for domestic, commercial and agricultural sites where space is tight.
- Space saving slimline design fits neatly against walls and fences
- Made from UV stabilised MDPE
- Baffled construction adds strength and reduces water movement
- Suitable for potable water storage and rainwater harvesting
- One piece moulded for strength and reliability
- Works horizontally or vertically depending on the space available
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Slimline Water Storage Tank - 500 Litre
A slimline water storage tank built for sites and gardens where a standard round tank will not fit. At 500 litres, it holds considerably more water than the 200 and 400 litre models in the same range, while keeping the same flat, wall hugging footprint. The tank is moulded in one piece from UV stabilised MDPE, with an internal baffled structure that adds strength and keeps it stable even when only part filled.
How 500 litres fits into the same slim footprint
Most tanks that hold 500 litres are round, which means a wide diameter that will not fit against a wall or in a narrow side return. That leaves site teams and homeowners choosing between a tank that fits the space and one that holds enough water. This tank keeps the same slimline shape as the smaller 200 and 400 litre models, so the extra capacity does not cost any extra footprint depth.
Key Features
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Baffled construction: Internal baffles add strength and reduce water surge when the tank is partly filled or being moved
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Slim profile: Fits flush against walls, garages and fences at the same depth as the smaller models in the range
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UV stabilised MDPE: Resists cracking and fading under constant outdoor sun exposure
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One piece moulded body: No seams or joints that could weaken over time
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Horizontal or vertical use: Can be installed either way depending on the space available
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Potable water rated: Suitable for drinking water storage as well as irrigation and general site use
Who is this for
Trades and roles:
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Site managers
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Groundworkers
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Farmers and smallholders
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Facilities managers
Industries:
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Construction
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Agriculture
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Facilities management
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Commercial premises
Specifications
| Specification | Detail |
| Product Name | 500 Litre Slimline Water Storage Tank |
| SKU | GW100006 |
| Tank Type | Slimline water storage tank |
| Capacity | 500 litres |
| Material | UV stabilised MDPE |
| Construction | One piece moulded, baffled |
| Installation | Above ground, horizontal or vertical |
| Water Suitability | Potable and non potable use |
| Dimensions | L1250 x D460 x H1010mm |
Compatibility
| Application or condition | Status |
| Rainwater storage | Compatible |
| Potable drinking water storage | Compatible |
| Agricultural and livestock water supply | Compatible |
| Commercial and general site use | Compatible |
| Below ground or buried installation | Not recommended |
| Storage of chemicals or fuel | Not recommended |
| Connection to pressurised water systems | Not recommended |
Who is this for
This tank suits site managers and facilities teams needing a larger backup water supply without giving up usable ground space, and farmers or smallholders storing water for livestock or irrigation on sites where a wide round tank would be impractical. Commercial premises use it for general water storage and washdown, while agricultural buyers rely on the added capacity for daily irrigation demand. Its flat footprint keeps it out of the way against boundary walls, sheds or fence lines.
Typical applications
- Storing bulk rainwater collected from farm buildings or commercial roof areas for later use.
- Supplying irrigation systems across larger gardens, allotments and agricultural plots.
- Providing backup potable water for site cabins, welfare units or rural properties.
- Holding water for livestock troughs on farms with limited space for a round tank.
- Supplying wash down water for vehicles, tools and equipment on commercial sites.
- Acting as an emergency water reserve for agricultural or facilities use.
How to use
Step 1: Position the tank on firm, level ground against the wall, fence or structure it will sit alongside.
Step 2: Connect the inlet to a rainwater diverter, mains fill point or hose, depending on the water source.
Step 3: Fit an outlet tap or pump connection at the base for drawing off water.
Step 4: Check the lid is fully seated before use to keep out debris and stop algae growth.
Step 5: Inspect the tank periodically for cracking, discolouration or leaks, especially after long UV exposure.
Common mistakes
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Placing the tank on uneven ground, which stresses the base and can cause splitting over time.
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Leaving the lid loose or missing, which lets in debris, insects and sunlight that encourages algae.
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Connecting the tank directly to a pressurised water system it was not designed for.
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Assuming the tank is rated for burial and installing it below ground, which it is not built for.
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Overfilling past the rated capacity, which puts unnecessary strain on the tank walls.
Safety
This tank is designed for above ground installation only and is not rated for burial or below ground use. It is not suitable for storing chemicals, fuel or any liquid outside its intended water storage use. Keep the lid fitted at all times to prevent contamination and reduce the risk of accidental access.
Maintenance
Rinse the interior periodically to remove sediment and prevent algae build up, especially where the tank collects rainwater. Check the lid seal and outlet fittings for wear every few months. Keep the area around the tank clear of overhanging vegetation that could drop debris into an open inlet.
Frequently Asked Questions
Q: Is this tank suitable for storing drinking water?
A: Yes. It's manufactured from UV stabilised MDPE and rated as potable, suitable for drinking water storage as well as irrigation and general site use. It's good practice to flush and rinse the tank before first use and keep the lid fitted to protect stored water from contamination.
Q: What does the baffled construction do?
A: Internal baffles divide the tank into sections, which adds structural strength and reduces the surge of water when the tank is partly filled or moved. That makes the tank more stable during handling and less prone to stress cracking over time. It's a design feature carried across the whole slimline range, not just this size.
Q: What is this tank not suitable for?
A: It's designed for above ground installation only and is not rated for burial or underground use. It should not be used to store chemicals, fuel or any liquid other than water. It is also not designed for direct connection to a pressurised mains water system.
Q: Why choose the 500 litre slimline tank over a round tank of the same capacity?
A: A round 500 litre tank needs a wide diameter, which rules it out for narrow side returns or anywhere already tight on space. This tank holds the same volume in the same flat, wall hugging shape as the smaller 200 and 400 litre models in the range, so the jump in capacity does not cost extra depth. For commercial and agricultural sites needing more stored water without more floor space, that matters.
Q: Can this tank be installed horizontally or vertically?
A: Yes. The slimline design works either way, so it can be positioned flat or upright depending on the space and connection points available on site. Most installations use it upright against a wall or fence, but horizontal placement works equally well where headroom is limited.
Q: How long will the tank last outdoors?
A: The UV stabilised MDPE construction is built for permanent outdoor exposure, and the baffled, one piece moulded structure adds resistance to cracking under regular use. Keeping the lid fitted, avoiding overfilling and checking periodically for damage all help extend its working life. Service life will still depend on how the tank is used and maintained on site.
