Potable Drinking Water Tanks

Above Ground Potable Water Tanks

Above-ground potable drinking water tanks are designed for the safe, long-term storage of water intended for human consumption. Manufactured from WRAS-approved polymer, these drinking water storage tanks are built to meet the highest UK water safety standards.

Most tanks in this category are produced using durable black MDPE (medium-density polyethylene), though Enduramaxx also offers options in a WRAS-approved blue polymer for added visibility and compliance. Available in a wide range of capacities, from compact 1000-litre drinking water tanks to large-scale 30,000-litre models, there's a solution for every application.

Choose from popular tank styles including slimline, vertical, and horizontal drinking water storage tanks, ideal for both residential and commercial use. Whether you're looking for drinking water storage tanks for homes, farms, or businesses, we stock models that are UV-stabilised, corrosion-resistant, and built to last.

With trusted brands and a comprehensive selection of drinking water storage tanks for sale, you can rely on us for high-quality, WRAS-compliant water storage solutions. Established in 2008, Tanks For Everything is your go-to source for safe and reliable potable water storage.

For applications not requiring drinking water quality, please see our range of non-potable water tanks.

Potable Drinking Water Tanks FAQ's

How to treat tank water for drinking​?

To make tank water safe to drink, keep the tank, roof, and gutters clean, and use a first flush diverter to reduce contamination. Install appropriate filters to remove sediment and odours, but also disinfect the water, either by boiling it for at least one minute, adding a small amount of household bleach (1–2 drops per litre), or using a UV treatment system. Regular testing is also recommended, especially after heavy rain. If in doubt, treat the water or use bottled water for drinking.

Are poly (polyethene) tanks safe for drinking water​?

Yes, poly (polyethene) tanks are generally safe for drinking water, provided they are made from food-grade, BPA-free materials. Most reputable manufacturers design them to comply with national drinking water standards. To ensure safety, choose tanks certified for potable water use, and keep them well-maintained and clean to prevent contamination.

How long can you store drinking water in a tank​?

Drinking water can be safely stored in a clean, sealed tank for several months, provided the tank is made from food-grade materials and kept free from contaminants. To maintain quality, the water should be protected from sunlight, regularly tested, and ideally rotated every 6 to 12 months. Using filters and disinfection methods like UV or chlorination can also help extend its safe storage life.

How to get rid of worms from a drinking water tank​?

To get rid of worms in a drinking water tank, first drain and thoroughly clean the tank, removing any sludge or debris where pests may thrive. Scrub internal surfaces with a safe disinfectant, such as a diluted bleach solution, then rinse well. Install mesh screens on inlets and outlets to prevent further contamination, and consider using a first flush diverter. After cleaning, disinfect the tank water using chlorine or a UV system. Regular maintenance and water testing will help prevent worms from returning.

How to remove algae from a drinking water tank​?

To remove algae from a drinking water tank, start by draining the tank completely and scrubbing the interior walls with a brush and a diluted bleach solution (typically 1 part bleach to 10 parts water). Rinse thoroughly to remove any residue. Ensure the tank is covered and light-proof, as sunlight encourages algae growth. Installing a first flush diverter and regular filtering can help reduce organic material that feeds algae. Ongoing maintenance and occasional disinfection will help keep the tank algae-free