Can I bring an empty water bottle through security and refill it?

The short answer

TSA lists an empty water bottle as allowed in both carry-on and checked bags. GOV.UK lists all drinks, including water, as liquids, so the 100ml limit applies at most UK airports.

US: TSA

TSA's empty water bottle page marks it as permitted in carry-on and checked bags. It adds that the final decision rests with the TSA officer on whether an item is allowed through the checkpoint. The page says it was last updated on 30 March 2017, so check current TSA guidance. The TSA 3-1-1 page says containers over 3.4 ounces belong in checked baggage, and that any item that alarms gets additional screening.

UK: GOV.UK

GOV.UK lists all drinks, including water, as liquids. Most airports do not allow containers over 100ml through security, even if only partly full, and some airports allow up to 2 litres. The page gives no separate rule for water bottles, so I cannot confirm from it whether an empty bottle is treated differently, though the limit is stated for containers.

If your airport requires a transparent bag, the page says containers go in one resealable bag of no more than 1 litre, about 20cm x 20cm. Check the rules at each airport you pass through, including on your return.

Refilling

The official pages do not address refill stations or refilling after security. GOV.UK covers buying drinks after security, saying items must be sealed in a security bag with the receipt visible if you are transferring, and that you should not open the bag until your final destination. Check your airport's website for refill points.

Rules for other countries

EU airports are not covered by the official pages. Rules change, so check the official page and your airport before you travel.

Sources: TSA: Empty water bottle, TSA: 3-1-1 liquids rule, GOV.UK: Hand luggage restrictions, liquids. Read 5 November 2026. Rules and fees change, so check the official page before you travel.

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