Brand Review · 2026

Waterloo — best flavored zero-sugar.

Texas-based sparkling water with bold flavors, energetic bubbles, and zero sweeteners. Our editorial pick for everyday flavored sparkling — wide range, clean ingredient deck, and budget-friendly multi-packs.

0g
Sugar & Sweeteners
10+
Flavors
12oz
Aluminum Cans
Waterloo sparkling water
Why We Like It

Big aroma, clean finish, genuinely no sugar.

Three reasons Waterloo is our top pick for everyday flavored sparkling.

Real Aromatic Flavors

Each can has a clear, identifiable aroma that matches the flavor — Grapefruit smells like grapefruit, Black Cherry like cherry. Not the muted "essence" of some competitors.

Zero Sweeteners (Verified)

Ingredient list is just "carbonated water + natural flavors." No sugar, no aspartame, no sucralose, no stevia. Verify on every flavor variant.

Wide Flavor Range

10+ flavors spanning citrus, berry, stone fruit, melon. Variety packs let you sample without committing to a 12-pack of one flavor.

Energetic Bubbles

Stronger carbonation than LaCroix — hits the soda-replacement spot for people who want more fizz with their flavor.

Flavors

Flavors & best picks.

Standout flavors from our taste panel — ranked for daily sipping and mocktails.

Waterloo Grapefruit
Top Pick · Citrus

Grapefruit

Punchy citrus on the nose, crisp finish — great "palate reset" between bites. The flavor most fans recommend first.

Waterloo Lime
Mocktail MVP

Lime

Classic seltzer lime, clear aroma, zero aftertaste — the mocktail MVP. Pairs with any spirit substitute or fresh fruit.

Waterloo Black Cherry
Sweet without Sugar

Black Cherry

Ripe cherry nose without syrupy finish — satisfying when you want "sweet" vibes, not sugar. Perfect after-dinner option.

Waterloo Watermelon
Fridge Staple

Watermelon

Refreshing and airy — softer nose than grapefruit/lime; perfect fridge staple for summer days.

Stone Fruit

Peach

Soft stone-fruit scent, clean finish — good swap for soda cravings without the sugar crash.

Crowd-Pleaser

Strawberry

Straightforward berry nose; crowd-pleaser, especially in variety packs. Not as bold as Black Cherry but reliably likable.

Ingredients

Ingredients, nutrition & label checks.

What's in a typical can, how to read the label, and full nutrition data.

What's Inside (Typical Can)

  • Carbonated water — purified, then carbonated
  • Natural flavors — extracted from real fruit/botanicals
  • Citric acid (some flavors) — for shelf stability + brightness
  • That's it. No sugar, no sweeteners, no colors, no preservatives

Label scan tip: If you see "0g sugar" but ingredients show "sucralose," "stevia," or "aspartame" — that's not Waterloo. Verify before buying.

Nutrition (per 12 fl oz / 355 ml)

  • Calories: 0
  • Total fat: 0g
  • Sodium: 0–10 mg (very low)
  • Total carbs: 0g
  • Sugars: 0g
  • Caffeine: none
Mocktails

Serving & mocktail ideas.

Zero-sugar drinks that taste like cocktails. Use real fruit, fresh herbs, and a chilled Waterloo can.

Waterloo mocktail

Best Serve

Chill cans to 2–5°C (right out of the fridge). Pour into a tall glass over ice — the ice helps slow the fizz so you taste the flavor longer. Garnish with a fresh wedge of the matching fruit.

1-Minute Citrus Pop

Tall glass + ice + fresh lime wedge + chilled Waterloo Lime + 2 mint leaves. Crush mint between your fingers first to release the oils.

Mint–Cucumber Cooler

Muddle 3 cucumber slices + 4 mint leaves in a glass. Add ice + Waterloo Watermelon. Top with a thin lime wheel. Refreshing without the alcohol.

Black Cherry Fizz

Chilled glass + 2 fresh cherries (split + pitted) + Waterloo Black Cherry + a slice of orange peel. Strong "dessert" feeling, zero sugar.

Peach "Iced Tea" (No Brew)

Steep 1 black tea bag in 50ml hot water for 4 minutes. Cool. Pour over ice in a tall glass + Waterloo Peach. Stir gently. Tastes like sweet peach iced tea — zero added sugar.

Party Pitcher (8 servings)

  • 2 cans Waterloo Lime + 2 cans Waterloo Watermelon
  • 1 cup fresh strawberries (sliced)
  • ½ cup mint leaves
  • 2 limes (sliced into wheels)
  • Plenty of ice. Stir gently before serving.
Comparison

Waterloo vs LaCroix vs AHA.

Three popular zero-sugar sparkling waters compared head-to-head.

BrandBubble StyleFlavor BoldnessBest UsePrice Tier
WaterlooEnergetic, livelyBold, real aromaMocktails, soda swapMid (~$5–6 / 12-pack)
LaCroixLight, gentleSubtle, "essence"All-day sippingBudget (~$4–5)
AHAMediumCreative pairings (lime+watermelon)When you want unusual flavorsBudget (~$4–5)

Bottom line: Choose Waterloo if you miss soda's flavor punch. Choose LaCroix for all-day light sipping. Choose AHA for novel flavor combinations.

FAQs

Frequently asked about Waterloo.

Bold answer first, details after.

— Q.01

Is Waterloo actually zero sugar and zero sweeteners?

Yes — Waterloo is genuinely unsweetened. No sugar, no aspartame, no sucralose, no stevia. The ingredient list reads "carbonated water, natural flavors" only. Always verify on each flavor's can label.

— Q.02

Does Waterloo contain sodium?

Most flavors list 0–10 mg sodium per 12 fl oz can. That's considered very low for daily sipping. Check each individual flavor's nutrition panel to confirm — values can vary slightly.

— Q.03

Is Waterloo okay for teeth compared to soda?

Yes — far less acidic than sugary sodas. Plain unsweetened sparkling water has minimal enamel impact. If you have enamel sensitivity, serve well-chilled and rinse with plain water after sipping.

— Q.04

Any caffeine or additives I should know about?

No caffeine. No added colors, no preservatives. Waterloo's core line is clean. If you see additives on a label claiming to be Waterloo, it's likely a different brand or counterfeit.

— Q.05

Which flavors are best for mocktails?

Lime and Grapefruit are most versatile for citrus-forward mixes. Black Cherry works for dessert-style spritzes. Watermelon pairs beautifully with mint and cucumber.

— Q.06

Shelf life and storage?

Drink by the printed date for best aroma and carbonation. Keep cans cool, out of direct sun, and stored upright. Serve at 2–5°C for best taste. Heat damages aroma and weakens carbonation.

Author & Editorial Standards

Last updated: May 2026 · Reviewed quarterly.

About Dr. Emily Carter

Hydration & Nutrition Editor with a PhD in Nutritional Sciences.

Reviews everything that touches health claims. Conducts blind taste panels for brand reviews.

  • Hydration science
  • Sparkling water reviews
  • Dental enamel research

Editorial Notes

  • No paid placements: Waterloo doesn't sponsor this review.
  • Real taste panel: 4 reviewers tasted all flavors blind in 2026.
  • Cited sources: ADA enamel research, FDA nutrition guidance.
  • Spot an error? Contact us.

Primary sources: Waterloo official ingredient labels, ADA citrus & enamel research, CDC added-sugars guidance, FDA Nutrition Facts guide.