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A HOUSEHOLD HOW-TO · WATER MAINTENANCE

Check the dates on your stored water.

October 19 edition · Published October 19, 2026 · 4-minute read

You remember putting water away. You may not remember whether it was bought sealed or filled at home, or when either happened. Before counting the shelf as ready, give those different supplies different maintenance notes.

1. Start free by reading what is already there.

Check existing labels without opening the containers. On your own inventory, separate unopened commercially bottled water from water you filled into storage containers. Record the actual visible date and what it means. If a date or the history is unknown, write “unknown”; do not invent an earlier filling date or add today’s date as if it were a fresh fill.

2. Use the right replacement rule.

CDC says to observe the expiration date on store-bought water. For containers you fill for storage, CDC advises replacing the water every six months and labeling it as drinking water with the storage date. A new sticker does not renew old water. Our organizing suggestion is to put a separate reminder in your calendar after a correctly prepared fresh fill, keeping that reminder distinct from the fill date.

3. Resolve uncertainty before relying on the supply.

Do not count an unknown or questionable container as verified drinking water just because it looks clear. Check its history and applicable official guidance. CDC identifies unopened commercially bottled water as the most reliable emergency source. Never use a former bleach, pesticide or other toxic-chemical container for drinking-water storage. If you are unsure whether a container is suitable for food use, ask its manufacturer.

4. Check where the containers live.

CDC recommends a cool location, away from sunlight and toxic substances. Read its current storage guidance linked below and compare your actual shelf. Do not stack heavy containers in a way that could fall or block an exit. Mark location problems for correction rather than declaring the supply ready from its date alone. Follow the container manufacturer’s storage instructions too.

5. Treat a refill as a preparation task.

For a self-filled supply, use CDC’s current container cleaning and sanitizing instructions before filling with safe water. That procedure is separate from treating unsafe drinking water; this guide does not provide a chemical dose. During an advisory, follow its specific instructions and do not assume ordinary boiling or disinfection addresses every contaminant. Never taste-test suspect water to decide whether to keep it.

Phone-save recap

Separate bought-sealed from self-filled. Read dates honestly. Keep fill dates and reminders separate. Check the container and storage place. Resolve unknowns before relying on the supply.

Sources and review

CDC emergency water supply guidance opened October 19, 2026; it lists June 27, 2025. The linked safe-water page was also opened today and lists September 19, 2024. Sorting the inventory, recording unknowns and setting calendar reminders are our organizing suggestions. No product selected: reading your existing labels is free.

• CDC: How to Create an Emergency Water Supply
• CDC: How to Make Water Safe in an Emergency