So, you’ve picked yourself up a SOMA filter. We’re ecstatic! But now you must be wondering about when to change the filter cartridge. Don’t worry, we’ve got you covered. With this easy guide, you will know exactly when the right time is to change your SOMA filter cartridge.

1. Water Hardness

One of the number one factors that affects how often you should be changing your filter cartridge is how hard your water is at home. Whether you live in a city, in a small town, or out in the country, your water is treated with chemicals and minerals to make it safe for your household. However, this doesn’t necessarily make it healthy, especially for your hair, skin, and nails. Typically, if you have a rural or country home, your water will fall higher on the hardness scale, so you should be changing your filter every 3 to 4 months. If you fit your home with a water softener, or use water softener salts, this is a good indicator your water is hard. If you live in an urban environment or city, your water may be less hard. If your water is less hard, you can change your filter between the recommended 4 to 6 months. Keep in mind water softener and softener salts make your water less hard on your appliances and home utilities, but the salts will further affect your skin, hair, and nails.

2. Usage

On top of how hard your water is, another major factor that will determine how often you should be changing your filter is how often you use it. If you shower every day, share your bathroom with others, or have someone in your household who showers every day, then it is best to change your filter out as early as 4 months. If multiple people in your household shower daily, you may even want to swap it out earlier. This will prevent any minerals in your water from getting through that filter and causing skin dryness, hair damage, and scalp conditions. With daily shower use, we recommend changing your filter every 3 months.

3. Hardware Build Up

Depending on where you are, your water may be treated differently. Some areas experience higher chlorine levels in their water, others higher iron, and if you have a water softener there may be more salts in your water than you realize. Each of these chemicals and minerals can build up on your hardware, like your bathtub, tiles, shower door, sinks, toilets, and appliances. In your tub or shower and toilet, you may notice water rings or stains at the water line. Your shower head, and sink faucets can experience calcium build up that can cause issues with water flow and clogging in your hardware. If you are noticing any buildup, we recommend not only changing your filter, but also cleaning your shower head regularly. This will ensure your shower experience is the best that it can be.

4. Your Hair and Skin

If you used to struggle with breakouts, dryness, dandruff, or other skin conditions prior to installing your SOMA, you may experience flare ups around the time your filter needs a change. This is because those chemicals and minerals are getting past the filter and affecting your body. You might also find your hair looking a little more brassy or dry than usual. If this starts to happen to you, it’s time to change your filter cartridge.

5. Scent of Water

Our last point is an interesting one. You might not notice it right away, but once you’ve installed your SOMA, the minerals or chemicals in your water will no longer be giving your water a noticeable scent. But once your cartridge is ready for a change, those smells are going to come back. For some people this might mean noticing a chlorine scent, or for others it might come across as slightly metallic (iron) or salty. This is your water telling you it’s time to change your SOMA filter cartridge!


If you’ve noticed one or more of the above points happening after you shower, then we highly recommend you change your filter cartridge. You are just a couple clicks away from making your SOMA experience the best that it can be.