AQUA Coldstream 9L

The AQUA Coldstream system uses gravity filtration. You simply pour water into the upper chamber, where it passes through the Coldstream FTO+ filters and into the lower chamber as clean, purified water, ready to use. No electricity or plumbing is required.

The AQUA Coldstream system is designed to reduce a broad range of contaminants, including bacteria, viruses, heavy metals, microplastics, pesticides, pharmaceuticals, fluoride, volatile organic compounds, and other harmful chemicals, while improving taste and odor.

No. One of the key advantages of the AQUA Coldstream system is that, unlike distillation or reverse osmosis, it delivers excellent filtration without stripping out the beneficial minerals naturally present in your water.

Yes. AQUA Coldstream can be used to treat non-potable water and make it suitable for drinking in many situations, including well water and natural water sources such as streams, lakes, and rivers. However, if the source water is highly contaminated, especially with significant biological contamination, it is wise to add a few drops of chlorine first as an extra precaution before filtering through the system. For best results, always start with the clearest water possible.

Each Coldstream FTO+ filter is rated for up to 1,500 liters. With 2 filters, that gives a total capacity of 3,000 liters, or about 1 year of use based on an average usage of 8 liters per day. Actual lifespan may vary depending on water quality and daily usage.

Calculate how many times you fill your system each week and multiply that by your system capacity to estimate weekly water usage. Then divide the 3,000-liter total capacity of 2 filters by that number to estimate how many weeks the filters should last. For example, if a larger family fills a 12L system 10 times per week, that equals 120 liters per week. 3,000 ÷ 120 = 25 weeks, so 2 filters would last about 6 months. In a high-use household, installing 4 filters may make more sense, increasing total capacity to 6,000 liters and extending replacement to about 1 year.

The AQUA Coldstream system is designed for countertop use. Furthermore, water is generally best absorbed by the body at room temperature. If you prefer your water chilled, simply pour some into a container and refrigerate it.

Yes, absolutely. Water can remain in the system for 2 to 3 days without any issue. When the system is used daily, the water is not sitting stagnant. If you will be away for 4 to 5 days or longer, simply empty the water into a container through the spigot when you return, then pour it back into the upper chamber so it can be filtered again and not go to waste.

No. The AQUA Coldstream is a gravity-fed system that requires no electricity, no plumbing, and no tools to set up. It is simple to assemble and easy for anyone to use.

The AQUA Coldstream can be used almost anywhere with access to water, including in off-grid locations. Because it requires no electricity or plumbing, it is ideal for kitchens, cottages, offices, RVs, boats, and emergency preparedness.

Filtration is fastest when the upper chamber is full, because the higher water level creates more pressure on the filters. As the water level drops, the flow rate naturally slows. In most cases, the upper chamber will empty into the lower chamber in about an hour or less. The best way to refill and manage the system becomes intuitive with regular use.

The right size depends on how many people will use the system, how often you cook, and how much water you want to have ready at one time. The 6L is best for someone living alone who does not cook much, or for camping and RV use when space is limited. The 9L is a good fit for 1 to 3 people, while the 12L is better suited for 3 or more people. The 9L and 12L models can also accommodate up to 4 filters, which increases flow rate and makes them especially well suited for heavier use. In general, a larger system simply means filling it less often.

Optional accessories include the Sight Glass Spigot, which lets you see the water level in the lower chamber without lifting the upper chamber and helps prevent overfilling. You can also add a Stainless Steel Stand, which raises the system off the counter so it is easier to place a glass or container under the spigot. While every AQUA Coldstream system comes standard with 2 Coldstream FTO+ filters, the 9L and 12L models can accommodate up to 4 filters, increasing flow rate and doubling total filtration capacity from 3,000 liters to 6,000 liters. To combine these upgrades, choose our AQUA Coldstream Bundle & Save option.

Clean the lower canister about once a month using a soft sponge with mild dish soap or a 50/50 mix of water and white vinegar. Every 3 months, clean the full system, including the upper and lower canisters and the spigot. Avoid dishwasher detergent. Full step-by-step instructions are available in our Help Center.

No, AQUA Coldstream water is not just for drinking. It can be used for hot and cold beverages, cooking, soups, smoothies, baby formula, pet water, sprouting, watering plants, and washing fruits and vegetables. That is why it is important not to underestimate the size you choose, so you always have pure water available when you need it.

You can find full instructions, care guidelines, and detailed performance information in our Help Center.