I don’t know about where you live, but where I am it has been unseasonably hot and dry. If you spend much time outside then dehydration becomes a serious concern.
I heard a nurse say once that if your urine is yellow then you are dehydrated. You can’t get an easier or clearer test than that.
The recommendation that I hear most for how much water to drink is one half ounce of water for each pound of body weight. For example, if you weigh 120 lbs then you need to drink 60 ounces of water. Keep in mind though, that just replaces the water that we use during normal activity. If you are active or working outdoors then you need to replace the additional water that you lose through sweat, which can be a lot more.
Also keep in mind that to stay hydrated you need to drink water, not juice, soda, coffee, tea, lemonade, or anything else. Processing those liquids requires additional resources from the body to deal with acidity, sugar, and whatever else is there. To stay hydrated requires clean, alkaline water.
My recommendation is to invest in an PiMag Waterfall gravity water filter or one of Nikken’s filtered water bottles. I didn’t drink enough water when I was younger because I didn’t like the taste. The Nikken water filters changed that for me. The water tastes great!
Be sure to stay well hydrated this summer.