plain seltzer water

Most plain sparkling waters in these listings are labeled zero calories and sugar‑free.

Descriptions vary but commonly include terms like “gentle,” “tiny,” or “effervescent” bubbles, with emphasis on sparkle and carbonation level.

Some plain options are labeled mineral waters and note mineral salts such as calcium and magnesium; others mention added natural electrolytes to enhance taste.

Labeling varies: some products are marked “low in sodium,” while others are labeled “sodium free.”

Many plain options explicitly state they contain no artificial colors, no artificial flavors, no artificial sweeteners, and no added sugar.