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Harlequin Slimline Non-Potable Water Tank | NP920SL

£602.00
£722.40 (inc VAT)
£602.00 (exc VAT)

FREE UK
dELIVERY

CUSTOMER OFFLOADING

NON-POTABLE STORAGE

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Product Description

This product is delivered directly from the supplier, lead times vary.

 

The Harlequin slimline non-potable above ground water tank is ideal for rainwater storage in small spaces for future use when water resources are low. Water stored is suitable for washing vehicles, sprinkler systems for garden and fire fighting but is not suitable for drinking.

 

Harlequin NP920SL Specification
Harlequin NP920SL (PW & NPW)Drawing
Harlequin Water Tank Brochure 
Harlequin Warranty Documents

 

SKU: TANWATEHAR001

Why Buy Your Water Storage Tank from Direct Drainage?

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Tanks ship direct from the manufacturer, with lead times varying by product.

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Non-Potable Water Storage

Explore tanks for irrigation, washdown and other non-drinking water applications.

Expert Tank Support

Need help with capacity or suitability? Call our team on 01388 537050.

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CUSTOMER REVIEWS

Rated 4.8/5 by Direct Drainage Customers

Based on over 600 verified reviews

VERIFIED REVIEW

Very helpful from the start to the finish

Items were despatched quickly and arrived the next day. Would recommend.

Title

North Hayne Farm Cottages | 26 June 2026

VERIFIED REVIEW

Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

Title

Sam Jukes | 5 November 2025

VERIFIED REVIEW

Great service!

I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

Title

Eve Harland | December 2025

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FAQs

Your questions about non-potable water tanks, answered.

What is a non-potable water tank?

A non-potable water tank is designed to store water that is not intended for human consumption. These tanks are commonly used for irrigation, rainwater harvesting, agricultural operations, washdown facilities and industrial processes.

 

Our range of non-potable water storage tanks provides practical solutions for domestic, commercial and agricultural applications.

What can non-potable water tanks be used for?

Non-potable water tanks are suitable for a wide range of applications, including garden irrigation, agricultural water storage, vehicle washing, landscaping and industrial process water.

 

They can also be incorporated into suitable rainwater harvesting systems, helping reduce reliance on mains water for non-drinking applications.

 

Always check the individual tank specifications to ensure suitability for your intended use.

Can I use a non-potable water tank for drinking water?

No. Tanks designated for non-potable water storage should not be used to store drinking water unless the manufacturer specifically confirms they are suitable for potable water applications.

 

If you require a tank for drinking water, you should choose a product specifically manufactured and approved for potable water storage.

Can these tanks be used for rainwater harvesting?

Yes, many non-potable water tanks can be incorporated into rainwater harvesting systems.

 

Collected rainwater can be stored for suitable applications such as garden watering, irrigation, vehicle washing and certain commercial uses.

 

Additional components, including filters, pumps and suitable plumbing arrangements, may be required depending on your installation.

What size non-potable water tank do I need?

The ideal tank capacity depends on your available space, intended application and daily water requirements.

 

Our range includes compact water storage tanks alongside larger-capacity solutions for agricultural, commercial and industrial applications.

 

When selecting a tank, consider your expected water consumption, available water supply and how frequently the tank will need refilling.

 

If you need assistance choosing the right capacity, our team is happy to help.

Are non-potable water tanks suitable for outdoor installation?

Many of our non-potable water tanks are manufactured from durable, UV-stabilised polyethylene, making them suitable for outdoor installation.

 

However, installation requirements vary between products. Tanks should be positioned on an appropriate, level and stable base, following the manufacturer's instructions.

 

Always check the product specifications for outdoor suitability, temperature limitations and installation guidance.

When will my non-potable water tank be dispatched?

Many of our non-potable water tanks are dispatched directly from the manufacturer, with lead times varying depending on the product and availability.

 

We aim to process orders promptly and provide delivery information wherever possible.

 

For an estimated dispatch date before ordering, please contact our team on 01388 537050.

How much is delivery, and will I need to arrange offloading?

Many of our water storage tanks qualify for free delivery to most mainland UK postcodes, although charges and restrictions vary depending on the product and delivery location.

 

Larger tanks may require specialist transport, suitable vehicle access and appropriate offloading equipment at the delivery address.

 

Please review the delivery information for your chosen product or contact our team before ordering if you have any questions.