# Water Profiles
**Water Profiles** is where you manage, create and store your Water Profiles.
Water Profiles should reflect the water source that you use for brewing. You can also create target profiles - that is, water profiles that you build using brewing salts when brewing.
Most brewers will only need to input one Water Source. You may need two or more if you use different water sources for any reason - for example, you may use tap water and well water, or RO water for different brews.
Most water companies will list the chemical breakdown of the water they supply on their website. This allows you to be precise when building a source water profile. It is recommended to enter up to date and accurate water information in order to get good accuracy when adjusting the brewing water and profile.
Once you have the information required, enter the Water Profile by selecting the **Add** button. This allows the Water Profile fields to be edited
Enter the name for your Water Source Profile (so it can be easily identifed in the **Recipes** tab)
If this Profile is **Source Water** (that is, you will be using it to brew with) then check the Source Water check box. If this is checked, then you will be able to select this as a water source but not as a **target** profile. If this is not checked then you can select this profile as a target profile, but **not** as a **source** profile
If this is your **Default Water Profile** (the water that you will be brewing with) select the **Default** check box as well. This Water Profile will then be pre-populated in the **Water Chemistry** tab when designing new recipes.
Next, enter the known values for **Calcium Ca****2+**** | Magnesium Mg****2+**** | Sodium Na****+**** | Chloride Cl | Sulfate SO₄²⁻ | Bicarbonate HCO****3****-** for your Water Profile
Once this information has been entered, select**Save** to save your Profile
Once saved, the new Water Profile can be used in the [**Water Chemistry**](/recipes/my-recipes/water-chemistry.md) section of the **Recipes** tab.
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