SumGood Foods Inc. · Scientific reviewer: Dr. Bohdan L. Luhovyy, PhD, MSVU · · 8 min read
Most kids don't recognize they're thirsty until they're already mildly dehydrated. And most parents underestimate how much that affects their day: energy, mood, focus at school, recovery from a long afternoon outside.
This guide covers age-banded fluid needs, warning signs of dehydration, what to look for in kids' drinks, and the Canadian regulatory gaps Canadian parents should know about (Red Dye 3 is still legal here).
Important: This article is for general education and is not medical advice. Always consult your pediatrician or family doctor for hydration questions about your specific child, especially during illness.
How much water do kids actually need?
Pediatric fluid needs are age-banded. The IOM Adequate Intake ranges from about 1.3 L/day for ages 1-3 to ~2.4 L/day for boys aged 9-13 and ~2.1 L for girls of the same age. More than 75% of US children fall below IOM recommendations (Kenney et al., NHANES, AJPH).
Two notes on these numbers. First, "total water" includes food: fruit, vegetables, soup, milk, yogurt all contribute meaningfully. Second, physical activity, hot weather, and illness all push needs up. A kid running around outside in July loses substantially more fluid than the same kid on a cool school day.
Why are children at higher dehydration risk?
Children have a higher proportion of body water that turns over faster, a surface-area-to-mass ratio that increases heat-related losses, and underdeveloped thirst recognition. A 2025 systematic review found dehydration in 69% of non-athlete children studied and 81% of young athletes (Nutrients, 2025).
Behavior compounds the physiology. Kids forget to drink. They prioritize play over hydration cues. School and daycare logistics, bathroom rules, scheduled break times, water-bottle policies, can limit how often a child drinks during the day. By the time most kids ask for water, they're already running a deficit.
How do you recognize dehydration in children?
Common signs include: decreased urine output (fewer wet diapers in infants; less-frequent bathroom trips in older kids), dark-yellow urine, dry mouth, lethargy, irritability, sunken eyes, and in infants, sunken fontanelle. Severe symptoms (lethargy, no urine for 6+ hours, rapid breathing, very rapid heart rate) warrant urgent medical attention.
| Age | Mild signs | Severe signs (call/ER) |
|---|---|---|
| Infant (0-12 mo) | Fewer wet diapers, dry mouth, fussiness | Sunken fontanelle, no urine 6+ hrs, lethargy |
| Toddler (1-3) | Dark urine, dry lips, less play energy | Sunken eyes, no tears when crying, rapid breathing |
| School-age (4-8) | Dark urine, headache, fatigue | Confusion, dizziness, very rapid heart rate |
| Tween (9-13) | Dark urine, headache, irritability, low energy | Persistent vomiting, decreased urination, confusion |
During illness, especially with vomiting, diarrhea, or fever, the dehydration window narrows fast. Pediatric oral rehydration solutions (Pedialyte and equivalents) are first-line for moderate-to-severe cases. Don't substitute sports drinks for ORS in clinical pediatric dehydration; the electrolyte balance is calibrated differently.
What should kids drink?
Water and milk remain the foundation. Beyond that, options include 100% fruit juice in age-appropriate small portions (per AAP guidance: no juice under 12 months; limited portions for older children), broth, smoothies, fresh fruit, and clean-label electrolyte beverages within Health Canada ranges.
What to limit or avoid: sugar-sweetened beverages (juice "drinks", fruit punches, sports drinks for non-athlete daily use), artificial-dye-containing drinks, and very high-sodium sports drinks designed for elite athletes. Mainstream sports drinks deliver 1:3 potassium-to-sodium ratios for kids who don't have elite-athlete sweat losses. The math doesn't fit. For more on the daily-hydration angle, see everyday hydration without the artificial junk.
Treats can fit in the routine without becoming the routine. Frozen fruit-based options can play a role: familiar format, treat-coded, and (for clean-label brands) without the artificial dyes and excess added sugar of mainstream alternatives. SumGood freezies are made with pressed fruit, potassium, and East Coast sea salt; the 2024 MSVU palatability data (7.0/9 hedonic, statistically equivalent to pizza) was conducted in adults aged 19-35 and is not specific evidence for pediatric use.
What about artificial dyes, is this still a real issue in 2026?
The U.S. FDA banned FD&C Red No. 3 in food on January 16, 2025 (reformulation deadline January 2027). Health Canada has not issued an equivalent ban, meaning Red No. 3 and other synthetic colours remain present in many Canadian-market drinks marketed to kids (FDA, 2025; CBC News, 2025).
The history matters for context. Red No. 3 was banned for use in cosmetics in 1990 after high-dose rat studies linked it to thyroid tumours. The food ban took 35 more years and was driven in part by the 1958 Delaney Clause, which prohibits FDA approval of any additive shown to cause cancer in animals or humans. Health Canada operates under different statutes and has not issued the same prohibition.
Other artificial colours commonly found in Canadian-market drinks marketed to kids include Allura Red AC (Red 40), Sunset Yellow FCF (Yellow 6), Tartrazine (Yellow 5), and Brilliant Blue FCF (Blue 1). The 2007 Southampton study and subsequent EU action led to mandatory warning labels on certain colour-additive combinations in Europe; Canada has not adopted equivalent labeling. This is information you can act on as you choose, not a fear pitch, just a label-reading reality.
How much sugar are kids' drinks adding?
Added sugars account for ~16% of daily calories in U.S. children (~17 teaspoons/day vs the AHA limit of 6 teaspoons). Canadian children and adolescents also exceed the WHO 10% free-sugar limit, with preschoolers' added-sugar intake well above guidance (CMAJ Open, 2021; AHA).
Where does it come from? Largely beverages: juice "drinks" with added sugar, fruit punches, sports drinks, sweetened iced teas. One typical kids' juice box can carry 10-13 g of added sugar; a 12-oz Gatorade can carry 21 g. Whole-fruit sugar (the kind in 100% juice or fresh fruit) comes packaged with fibre, vitamins, and a slower glycemic curve. "No added sugar" is meaningfully different from "low sugar."
When should you call your pediatrician or go to the ER?
Call your pediatrician for: persistent vomiting or diarrhea (especially with fever), inability to keep liquids down for 6-8 hours in a young child, decreased wet diapers/urine output, lethargy or unusual irritability, signs of moderate-to-severe dehydration. Go to the ER for: sunken fontanelle in infants, no urine for 6+ hours, rapid breathing, very rapid heart rate, persistent lethargy, or any concerning change.
Pediatric ORS is first-line for clinical dehydration. SumGood is a food product, not a substitute for medical-grade rehydration. When in doubt, call.
Frequently asked questions
How much water do kids need?
IOM AI varies by age: ~1.3 L/day (1-3 yrs), 1.7 L (4-8), 2.4 L (boys 9-13), 2.1 L (girls 9-13). Includes food + beverages. More than 75% of US children fall below recommendations (NHANES).
Are electrolyte drinks safe for kids?
Within Health Canada ranges and free of artificial dyes and excess added sugar, generally yes for occasional use, but water and milk are the foundation. Always check with your pediatrician.
What's the best drink for a sick child?
Pediatric oral rehydration solutions (Pedialyte, etc.) are first-line for moderate-severe dehydration. For mild illness, water and small frequent sips of clear fluids. Always consult your pediatrician.
How can I tell if my toddler is dehydrated?
Watch for fewer wet diapers, dry mouth, sunken eyes, lethargy, irritability. Severe signs (sunken fontanelle, no urine 6+ hours, rapid breathing) need urgent care.
Are SumGood freezies safe for kids?
SumGood is a food product made with pressed fruit, potassium, and East Coast sea salt. As with any new food, discuss with your pediatrician. Not a treatment for any medical condition.
Why does Canada still allow artificial dyes the US banned?
Canada and the US operate under different food-additive statutes. Health Canada has not (yet) banned Red No. 3 in food, despite the January 2025 FDA action. Parents can read labels and decide.
The bottom line
- Age-banded fluid needs: 1.3 L (toddlers) to 3.3 L (teen boys) total water
- 75%+ of kids fall below recommendations: build the routine before they recognize thirst
- Watch for dehydration warning signs by age band; ORS is first-line for sick kids
- Read labels for artificial dyes (still legal in Canada) and added sugar
Read more: hydration through life's sensitive stages · everyday hydration without the artificial junk