Add the water, lemon juice, celery, mint, honeydew, turmeric, maple syrup and cayenne to a high-speed blender and blend for about 2 minutes or until completely smooth.
Pour the mixture through a nut milk bag or a pieces of cheesecloth into a large bowl to catch all that goodness. Use one hand to grip tight at the top of the nut milk bag (or gathered up cheesecloth) while the other pushes the mixture through (this is super relaxing for me.) Once you've strained all the liquid, transfer to a large bottle and add the chia seeds. Give it a good shake, then let the juice set in the refrigerator for 20 minutes before enjoying (unless you used very cold water.) You can use the leftover pulp in smoothies!
Store in a bottle, in the refrigerator, for up to a week!