Is it possible to suffer from chronic dehydration if all organs in the body are healthy, sugar and electrolyte levels are balanced, drinking adequate amounts of water?

It is curious as to what you mean by chronic dehydration. If you are not urinating at least every 8 hours you are on the low side of fluid intake but normal lab values mean your body/ kidneys have compensated for your pattern of fluid intake. If you are going this or more often, your body has what it needs.

No

You can put the issue to rest by drinking enough water daily so that your urine is mostly colorless. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.