8 Person 3400 Litre Shallow Dig Septic Tank
£1,449.05 Exc VAT (£1,738.86 Inc VAT)
Delivery 2 – 5 Working Days
FREE UK Mainland Delivery
Product Description
8 Person 3400 Litre Shallow Dig Septic Tank
The 8 Person 3400 Litre Shallow Dig Septic Tank is a dependable underground wastewater solution designed for properties with up to eight occupants that are not connected to the mains sewer network. Ideal for larger family homes, holiday accommodation, farms and rural properties, this high-quality polyethylene septic tank delivers reliable long-term wastewater treatment while remaining straightforward to install and maintain.
Manufactured in the UK using rotationally moulded high-density polyethylene (HDPE), this septic tank features a robust ribbed construction that provides exceptional structural strength without the weight of traditional concrete tanks. Its lightweight design makes transportation and installation easier, helping to reduce both installation time and associated costs.
The shallow dig design reduces excavation depth, making it particularly suitable for sites with higher groundwater levels or where minimising excavation is preferred. In many standard installations, the ribbed construction allows the use of an environmentally friendly pea gravel backfill, helping to eliminate the need for costly concrete encasement.
Supplied with a Zoeller Residential Septic Tank Effluent Filter as standard, this model provides an additional level of protection by helping to prevent solids from entering the drainage field. The filter also features a patented bypass protection sleeve, ensuring solids remain within the tank during routine filter cleaning.
Backed by a 10 Year Manufacturer’s Warranty, the 3400 Litre Shallow Dig Septic Tank provides a durable, low-maintenance wastewater solution for domestic off-mains drainage systems.
Suitable For
- Homes with up to 8 occupants
- Larger family homes
- Rural properties
- Holiday cottages and holiday lets
- Barn conversions
- Smallholdings
- Domestic off-mains drainage systems
- Replacement septic tank installations
- New build developments without mains drainage
Key Features
- Suitable for properties with up to 8 people
- 3400 litre underground septic tank
- Manufactured in the UK
- High-strength rotationally moulded HDPE construction
- Lightweight for easier transportation and installation
- Shallow dig design helps reduce excavation
- Ribbed construction for outstanding structural strength
- Suitable for pea gravel backfill in many standard installations
- 110mm inlet and outlet pipe connections
- Telescopic neck extension available
- Includes Zoeller Residential Septic Tank Effluent Filter
- Patented bypass protection sleeve helps retain solids during filter cleaning
- 10 Year Manufacturer’s Warranty
Optional Extras
- Telescopic Neck – Extends the existing turret by approximately 300mm to 800mm for deeper installations.
- Pedestrian Lid Cover – Suitable for installations accessed by foot traffic only.
- Vehicle Rated Lid Cover – Designed for installations beneath driveways and areas subject to vehicle traffic.
Important Information
This septic tank is designed for properties without access to the mains sewer network and should be installed in accordance with the manufacturer’s installation instructions and current Building Regulations. Regular inspection and periodic emptying will help maintain efficient operation and maximise the lifespan of the system.
Product Specification
| Dimensions | L 3680 x W 1260 x H 1360 mm |
|---|---|
| Manufacturer | |
| Material | |
| Capacity |
Delivery and Returns
Delivery Information
Shipping costs for standard postcodes within UK Mainland are calculated at checkout when a postcode is entered.
Delivery charges are based on current manufacturer and courier rates. In some cases, delivery costs may be subject to confirmation after an order has been placed due to supplier delivery zones or freight changes. If an additional delivery charge applies, the customer will be notified before the order is dispatched and given the option to proceed or cancel the order for a full refund.
Some areas may incur additional charges, including:
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Scottish Highlands and Islands
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Isle of Wight, Channel Islands, Isle of Man, Anglesey, Western Isles, Shetland Islands, Orkney Islands, Isles of Scilly
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Northern Ireland
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Republic of Ireland
Additional charges may apply for postcodes in these areas:
AB, BT, CA, CT, DD, DG, EH, FK, G, GY, IM, IV, JE, KA, KW, KY, LD, LL, ML, PA, PH, PO 30–41, SA, SY, TD, TN, TR, ZE
If your postcode is listed above, please contact us before ordering for a shipping quote.
Some products are only available for delivery within England & Wales; this will be stated on the product page. If you are outside this area, please contact us for a quotation.
Delivery Lead Times
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Refer to individual product pages for expected delivery times.
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Custom orders may take longer; please enquire before ordering.
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Items on the same order may be delivered separately due to stock locations.
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If delivery is delayed, we will notify you via email.
Delivery Method
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All deliveries are kerbside unless stated otherwise.
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For larger items, customer offloading may be required.
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Someone must be available to receive and inspect the goods.
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Goods may be left in a safe place at the customer’s risk; Online Tank Store cannot accept responsibility once goods are left.
Note: By signing for the goods, you confirm that the outer packaging is intact and free from visible damage. Any visible damage must be noted on the delivery paperwork or the delivery refused.
Scheduled delivery times may be accommodated; please add instructions in the Customer Notes section at checkout.
Missing or Faulty Items
If items are missing or arrive damaged:
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Contact us within 48 hours of delivery at [email protected]
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Provide:
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Order number
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Photos of the goods
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Brief description of the issue
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We may require images for the manufacturer to provide replacements.
Delivery Charges & Returns
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Ensure the product is the correct size and suitable for your intended use.
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Standard tanks (no customisation) are returnable but subject to a restocking charge and must be returned in A1 condition. Returns may be expensive due to size and weight; please check before ordering.
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Failed delivery attempts: After one unsuccessful delivery attempt, items will be returned to the depot, and redelivery charges may apply.
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Special or custom tanks are non-returnable. If the wrong product is ordered or the item is no longer required, it cannot be returned, and no refund will be issued.
Returns & Refunds
Our full returns and refund policy can be found by clicking here.
It is important to us that the items you order are correct for your needs however, we understand that situations and requirements can change. It can be costly to return an order so please ensure you are certain of your requirements before you order and that you have read the returns policy above for details.
Custom Tank – An order is considered ‘custom’ when a non-standard configuration or colour is requested. Custom orders are not eligible for return so please ensure the product is what you require before ordering. By purchasing, you are agreeing to the above terms.