Yes, the tap water in the Canary Islands is legally safe to drink and meets EU standards, but a lot of it is desalinated seawater that tastes faintly salty and chlorinated, so most visitors buy cheap bottled water instead. You won't come to any harm from a glass of tap water in a reputable hotel or restaurant, and it's absolutely fine for brushing your teeth, making tea or having ice in your drink. It just doesn't taste like the water you're used to at home.
Is Canary Islands tap water actually safe?
It is. The Canaries are part of Spain and the European Union, and the mains supply is treated and tested to the same drinking-water rules as anywhere else in the EU. The islands are dry, volcanic and short of natural fresh water, so a large share of what comes out of the tap has been produced by desalination plants that turn Atlantic seawater into drinking water, topped up in places by mountain springs and boreholes.
That process leaves the water perfectly potable but not always pleasant. Desalinated water is often re-mineralised and chlorinated before it reaches you, which is why a glass straight from the tap can taste slightly salty, metallic or of swimming pool. None of that makes it unsafe — it's a taste issue, not a health one.
So why does almost everyone drink bottled?
Simple: taste and habit. Ask around any resort and you'll find British and Irish visitors reaching for bottled water, and plenty of locals do the same, especially in older buildings where the pipework and rooftop storage tanks can add their own flavour. If you fill a glass and it tastes off, that's usually the tank or the desalination, not contamination.
The good news is that bottled water is genuinely cheap here. A large 1.5-litre bottle from a supermarket typically costs well under a euro, and multi-packs of five- or eight-litre containers work out cheaper still if you're self-catering. For a sense of how far your euros stretch on everyday shopping, see our guide to Canary Islands prices.
What's fine to use tap water for?
Plenty. Even the most bottled-water-loyal traveller can relax about the everyday stuff:
- Brushing your teeth — completely fine everywhere.
- Ice and diluted drinks in reputable bars and restaurants — these places use treated mains water (or their own filtered supply), so there's no need to fuss about ice in your gin and tonic.
- Washing and preparing salad and fruit — no problem.
- Tea, coffee and cooking — boiling isn't necessary for safety, though some people prefer bottled purely because it tastes cleaner.
If you're self-catering and the tap water tastes strongly of chlorine, fill a jug and leave it in the fridge for an hour or two. The chlorine taste fades noticeably and it's kinder on the wallet than buying bottles for cooking.
Will it upset my stomach?
Tap water itself is very unlikely to be the culprit behind a dodgy tummy on a Canaries holiday. Far more often, holiday stomach upsets come down to unfamiliar food, too much sun, a change of routine, or buffet food that's been sitting warm too long. We cover the real risks and how to sidestep them in our guide to avoiding food poisoning in the Canaries, and there's broader practical advice in our health and safety guide.
If you have a sensitive stomach or you're travelling with very young children, sticking to bottled for drinking is a sensible, low-effort precaution — not because the tap is dangerous, but because it removes one more variable while your system adjusts.
Does it vary between the islands?
A little. The pattern is much the same across Tenerife, Gran Canaria, Lanzarote and Fuerteventura: treated, safe, but often desalinated and not the tastiest. The greener, higher western islands such as La Palma and La Gomera get more of their supply from mountain springs, so tap water there can taste noticeably fresher. Either way, the safety verdict doesn't change — it's the flavour that shifts.
The refillable bottle tip
If you'd rather not lug crates of plastic back from the supermarket, bring a decent refillable bottle. A simple carbon-filter bottle or jug takes the edge off the chlorine and salt taste, so you can refill from the tap and drink happily. In the heat you'll get through more water than you expect, so having a bottle in your bag also saves you paying tourist prices for a small bottle at an attraction.
Whatever you drink, drink plenty. The Canary sun and the steady trade-wind breeze dry you out faster than you notice — pack a reusable bottle alongside the rest of your holiday packing list.
Eating out: should you ask for tap water?
In restaurants you can absolutely ask for tap water (agua del grifo), and it's free — but be aware that in tourist areas many places will assume you want bottled and bring a chargeable bottle unless you're specific. If you'd rather not pay, ask clearly for tap water; it's perfectly safe, even if a waiter in a resort restaurant may look mildly surprised. Bottled still (agua sin gas) and sparkling (agua con gas) are both widely available and inexpensive when dining out. Our guide to eating out in the Canaries covers the wider etiquette, and if you're watching the pennies, tap water with your meal is one easy saving.
The bottom line
Canary Islands tap water is safe and EU-regulated, and you can brush your teeth, take ice and drink it without worry — it simply tastes salty or chlorinated because much of it is desalinated seawater. That's why most visitors buy bottled water, which is reassuringly cheap in the supermarkets. Bring a refillable filter bottle if you want the best of both worlds, keep well hydrated in the heat, and save your real caution for the buffet rather than the tap.