Wash cucumber fruit thoroughly before slicing or cubing.
Slice cucumber into thin discs.
Slice strawberries and mango, any other fruit being added.
Add fruit and cucumber to cold, filtered water.
Store in the fridge until ready to drink.
Notes
Cold water will keep your fruit and veggies fresh and in-tact longer. So not only will it taste better, but it will look prettier. (I honestly can't get over how gorgeous fruit infused water is.)
Chill your infused water in the fridge or overnight for the best tasting results.
If using citrus like lemon or lime, remove the peel before adding to water. Peels create a bitter flavor that intensifies the longer they are soaking in the water.