Here at Distilled Water Supplies, we produce and sell 100% steam‑distilled, polished, UV‑treated water in brand‑new, food‑grade HDPE containers (BPA-free). We have been one of the UK's leaders in water distillation since 2008.
Daily EC/TDS checks plus periodic UKAS‑lab analysis. Purity: EC < 2 µS/cm; TDS < 1 mg/L; pH ~6.9. Typical ions and metals below reporting limits.
Our ultra pure Distilled Water is ideal for labs, autoclaves, CPAP humidifiers, irons, batteries, cosmetics, printing, optics and electronics. Sizes: 250ml - 25L in HDPE with amber glass options. Order by 14:00 (Mon–Fri) for next working day delivery.
Distilled water is water that has been heated to the point where the steam evaporates and many impurities are left behind. Distilled water has several benefits that make it a great choice for many applications. Not only is it virtually free of contaminants, minerals and bacteria, but it can also help prolong the life of appliances and machinery that require clean water for operation.
During distillation, water is heated to its boiling point, vapourising and leaving behind minerals, chemicals, and pollutants. The vapour then condenses back into liquid form, resulting in water that is virtually free from any dissolved solids, heavy metals, bacteria, and other impurities commonly found in tap water. This intense purification process ensures that our distilled water is incredibly pure, making it ideal for applications where high purity is essential, such as laboratories, medical settings, and certain domestic applications. Unlike other filtered waters or deionised water, distilling is the gold-standard process that removes virtually all impurities, delivering an exceptional level of purity.
If you're looking for some of the purest water available in the UK, then look no further than our distilled water. We test our water daily for total dissolved solids (TDS) and periodically using a UKAS-registered laboratory.
Here is the specification of our most recently laboratory-analysed distilled water: Date sampled 05/08/2025
- pH - 6.9
- Electrical conductivity <2 uS/cm
- Calcium (Ca) <0.09 mg/l
- Potassium (K) <0.08 mg/l
- Sodium (Na) <1 mg/l
- Ammonia (N) <0.01 mg/l
- Chloride (Cl) <1 mg/l
- Fluoride (F) <0.1mg/l
- Nitrate (NO3) <1 mg/l
- Nitrite (NO2) <0.02 mg/l
- Sulphate (SO4) <1 mg/l
- Iron (Fe) <0.01 mg/l
- Copper (Cu) <0.1 mg/l
- Total dissolved solids (TDS) <1 mg/l (ppm)
We have now introduced Ultra-pure Triple Distilled water - Click here to buy
Is your water the same as deionised water?
No. Deionisation removes ions but will not remove organics or microorganisms. Steam distillation broadly removes ionic and many non‑ionic contaminants, producing very low conductivity water that is microbially safe.
How do you verify purity every day?
We measure electrical conductivity and TDS for production batches daily with calibrated meters, run weekly photometric checks for selected analytes, and send periodic samples to a UKAS‑accredited laboratory.
Why is the pH close to neutral but sometimes lower after opening?
Freshly distilled water is near neutral. After opening, CO₂ from the air dissolves into the water and can lower the pH slightly without affecting purity for typical uses.
What sizes can I buy?
We offer our pure distilled water in bottles and drums from 250ml to 25L, with discounted palletised bulk options up to 600L. Amber‑glass options and triple‑distilled water are also available. See below.
Do you offer next‑day delivery?
Yes, order by 14:00 (Mon–Fri) for next working day delivery (UK mainland, exc. Scottish Highlands). Larger/bulk orders can ship palletised.
The latest addition to our range of waters. This triple distilled water is batch made in laboratory glassware for applications requiring the highest purity levels. Water is distilled on day of dispatch for maximum freshness.
IN STOCK NOW! Our 500ml bottle of Distilled Water - Perfect for use at home in steam irons, humidifiers, steam generators etc.
IN STOCK NOW! 250ml bottles of our triple distilled water - Perfect for use at home for applications requiring ultra pure distilled water that has undergone distillation three times.
Triple Distilled Water improves on the purity of our regular distilled water. By undergoing the distillation process three times, each cycle further refines and purifies the water, ensuring that any remaining impurities are meticulously removed. Our triple process guarantees a level of purity that is unparalleled, making it an ideal choice for a variety of uses such as making colloidal silver and homemade cosmetics and soaps, ensuring that the final products are free from any impurities that could irritate the skin.
IN STOCK NOW! 500ml bottles of our triple distilled water - Perfect for use at home for applications requiring ultra pure distilled water that has undergone distillation three times.
Triple Distilled Water improves on the purity of our regular distilled water. By undergoing the distillation process three times, each cycle further refines and purifies the water, ensuring that any remaining impurities are meticulously removed. Our triple process guarantees a level of purity that is unparalleled, making it an ideal choice for a variety of uses such as making colloidal silver and homemade cosmetics and soaps, ensuring that the final products are free from any impurities that could irritate the skin.
Our 500ml bottle of Distilled Water complete with easy dispense twist nozzle - Perfect for use at home in steam irons, humidifiers, steam generators etc.
Our handy 1 Litre bottle complete with 'spray' and 'jet' trigger spray. Perfect for regular home users as well as testing purposes.
IN STOCK NOW! Our 250ml bottle of Distilled Water - Perfect for use at home in steam irons, humidifiers, steam generators etc.
Please note: A minimum of 4 x 250ml bottles must be ordered
A robust and hard wearing dispensing tap that can be screwed directly on to our 25 litre drums for precise and accurate pouring.
IN STOCK NOW! Our 2 litre Distilled Water bottle is more economical that our 1 litre bottles, but still very easy to carry and pour. It comes complete with a tamper-evident screw cap
IN STOCK NOW! Our 25 litre Distilled Water drum is the most economical way to buy ultra pure distilled water from us. Perfect for jobs requiring large volumes such as research laboratories and industrial processes. The drum is made from food-grade HDPE and comes complete with a tamper-evident screw cap. For additional savings on larger orders, we can send the drums on a pallet to reduce packaging and delivery charges.
Buy 25 litre drums of distilled water directly from the manufacturer. We use our own proprietary 6-step method to ensure our water is of the highest quality and it undergoes UV sterilisation prior to bottling to further reduce potential bacteria. Our water is 100% steam distilled, not just filtered, deionised, or reverse osmosis water. After you buy distilled water from us, keep the drum sealed and away from sunlight, storing it between 15-25°c.
IN STOCK NOW! This handy 1 Litre bottle size is perfect for regular home users as well as 'one-off' research and testing purposes.
IN STOCK NOW! Our 25 litre Distilled Water drum is the most economical way to buy ultra pure distilled water from us. Perfect for jobs requiring large volumes such as research laboratories and industrial processes. The drum is made from food-grade HDPE and comes complete with a tamper-evident screw cap. For additional savings on larger orders, we can send the drums on a pallet to reduce packaging and delivery charges - Palletised delivery is available on quantities from 9 drums (see below).
Buy 25 litre drums of distilled water directly from the manufacturer. We use our own proprietary 6-step method to ensure our water is of the highest quality and it undergoes UV sterilisation prior to bottling to further reduce potential bacteria. Our water is 100% steam distilled, not just filtered, deionised, or reverse osmosis water. After you buy distilled water from us, keep the drum sealed and away from sunlight, storing it between 15-25°c.
Our 250ml amber glass bottle of Distilled Water is ideal for making Colloidal Silver and mixtures that need protection from sunlight. Choosing our Distilled Water in amber glass bottles offers numerous benefits, making it an excellent choice for those seeking longer term storage options. Amber glass effectively blocks harmful UV rays, preserving the water's purity for longer.
The glass bottle is also fully reusable for home made cosmetics and tinctures.
Pure, Distilled Water - Now Available in 5 Litre Containers
IN STOCK NOW! Our 5 litre Distilled Water drum is economical, yet easy to carry and pour. Our 5 litre bottles have an integral handle and are designed to be easy to transport and store. The larger size makes them perfect for larger applications, while still being light enough to carry.
Our 5 litre drum is the convenient, great‑value size for regular users who still want easy handling and storage. Every batch is steam‑distilled, polished through mixed‑bed resins and UV‑treated, then bottled in brand‑new, food‑grade HDPE with a tamper‑evident screw cap. We’ve specialised in distillation since 2008, with daily EC/TDS checks and periodic UKAS‑accredited lab analysis.
Each of our 5 litre distilled water bottles is equipped with a tamper-evident screw cap, making it easy to tell if the bottle has been opened. These food-grade HDPE containers are certified BPA-free.
Distilled water is the purest form of water available. Unlike filtered water, distilled water goes through a 6-stage process that removes impurities, sediment and minerals. As a result, it's far purer than any other type of water.
Uses & applications
Ideal wherever low‑conductivity, mineral‑free water prevents deposits or interference:
- CPAP machines and home humidifiers
- Steam irons and garment steamers
- Lead‑acid car batteries and coolant top‑ups
- Autoclaves, sterilisers and lab glassware rinsing
- Cosmetics blending and printing/photography
- Optics and electronics cleaning/setup
- Houseplants (e.g., orchids, carnivorous plants)
IN STOCK NOW! 250ml bottles of our triple distilled water - Perfect for use at home for applications requiring ultra pure distilled water that has undergone distillation three times.
Triple Distilled Water improves on the purity of our regular distilled water. By undergoing the distillation process three times, each cycle further refines and purifies the water, ensuring that any remaining impurities are meticulously removed. Our triple process guarantees a level of purity that is unparalleled, making it an ideal choice for a variety of uses such as making colloidal silver and homemade cosmetics and soaps, ensuring that the final products are free from any impurities that could irritate the skin.
This 500ml amber glass bottle of Distilled Water is ideal for making Colloidal Silver and mixtures that need protection from sunlight
IN STOCK NOW! 500ml bottles of our triple distilled water - Perfect for use at home for applications requiring ultra pure distilled water that has undergone distillation three times.
Triple Distilled Water improves on the purity of our regular distilled water. By undergoing the distillation process three times, each cycle further refines and purifies the water, ensuring that any remaining impurities are meticulously removed. Our triple process guarantees a level of purity that is unparalleled, making it an ideal choice for a variety of uses such as making colloidal silver and homemade cosmetics and soaps, ensuring that the final products are free from any impurities that could irritate the skin.