Water at Home in Cyprus: The Tank, Solar Collectors, and Filters
Look up at any Cyprus rooftop and you'll spot two things: a white plastic tank, and next to it flat dark panels angled towards the sun. That's not a satellite dish and it's not decoration — it's the home water system that keeps every tap on the island running. Back in the UK, Germany, or Austria you just turn on the tap and forget about it. Here, ten minutes understanding how it all works will save you a lot of head-scratching later.
The Roof Tank: Your Silent Water Reserve
Virtually every house and apartment building in Cyprus has a white polyethylene tank on the roof, usually between 500 and 1,000 litres. It acts as a buffer between the public mains and your taps.
The public water network doesn't always deliver at constant pressure — in some areas supply can be intermittent, and during dry summers restrictions may apply. The roof tank absorbs this: it fills whenever mains pressure is available, so you always have water at home. Gravity does the rest.
The tank sits high up so gravity provides the water pressure — no pump needed. The trade-off: pressure is usually lower than you're used to in Northern Europe. If the shower feels weak, that's physics, not a network fault.
Important in summer: What comes out of the cold tap is often anything but cold from May to September. The tank on the roof and pipes running through exterior walls absorb heat — 30°C or more from the "cold" tap is not unusual in midsummer. A refreshing cold shower simply doesn't exist here in July.
The tank should be cleaned once a year — sediment, algae, and the occasional curious insect tend to settle in. A local plumber handles this quickly and cheaply.
| Position | Kosten | Hinweis |
|---|---|---|
| Tank cleaning (professional) | 40–80 EUR | Depending on tank size |
| Typical volume — detached house | 500–1000 L | |
| Typical volume — apartment | 200–500 L |
Solar Collectors: Hot Water from the Sun
The flat thermosiphon systems next to the tank are a fixture on almost every Cyprus rooftop — with good reason. They heat water using solar energy and push it up into the insulated storage tank through natural convection. No pump, no controls, no running costs.
From May to October this means in practice: water from the shower can be so hot that you start with cold and slowly mix in warm. Temperatures of 60–70°C in the solar storage tank are normal in peak summer. In winter, a built-in electric heating element takes over.
Just moved in? In summer, never turn straight to hot. The solar storage tank can reach scalding temperatures. Start cold, mix gradually — until you get a feel for how hot the system is running that day.
Hard water is the natural enemy of the electric heating element in the solar boiler. Scale slowly encrusts the heating cartridge until it eventually burns through — and the next time you switch it on, the RCD trips. The element then needs replacing by a plumber or electrician. Not complicated, but very inconvenient in winter. To delay this: have the system descaled regularly, or simply budget for the replacement as routine maintenance every few years.
Hard Water: The Constant Cyprus Companion
Cyprus water is very hard — typically 20–30 °dH. For comparison, Vienna has soft water at under 7 °dH. Scale deposits everywhere: in the coffee machine, the kettle, the shower screen, and most importantly in boilers, heating elements, and fittings.
This isn't a water quality issue — it's simply the geological reality of a limestone island. There are solutions, though:
| Option | What it does | Typical installation point |
|---|---|---|
| Sediment filter | Removes suspended particles and rust | Before the roof tank |
| Water softener | Exchanges calcium/magnesium for sodium | Before the roof tank |
| Anti-scale magnet | Reduces scale deposits physically | On the main pipe |
| Inline tap filter | Improves taste locally | Under the sink |
| Reverse osmosis system | Removes scale, chlorine, almost everything | Kitchen / drinking water |
For most expat households, the pragmatic approach is: a sediment filter before the tank plus an RO unit in the kitchen for drinking and cooking water. A full softener is great but not essential for everyone.
Reverse Osmosis in the Kitchen
Under almost every Cyprus kitchen sink you'll find a small unit with several filter cartridges and a separate small tap on the edge of the basin — this is the reverse osmosis (RO) system. It forces water through a fine membrane, removing scale, chlorine, heavy metals, and microorganisms. What comes out is clear, soft, and taste-neutral.
- 1Buy or rent a unit — local plumbers and water suppliers often handle installation too
- 2Installation under the sink: cold water inlet, waste connected to the trap
- 3Separate small tap on the sink for filtered drinking water
- 4Replace filter cartridges annually — mark it in your calendar
- 5Replace the membrane every 2–3 years
| Position | Kosten | Hinweis |
|---|---|---|
| 5-stage RO unit including installation | 200–450 EUR | |
| Annual service (filter cartridges) | 50–120 EUR | |
| Membrane replacement (every 2–3 years) | 40–80 EUR |
How It All Fits Together
- 1Public mains → sediment filter (optional softener) → roof tank
- 2Roof tank → cold water to all outlets (gravity fed)
- 3Roof tank → solar collector → solar storage tank → hot water to all outlets
- 4Kitchen cold water → RO unit → separate drinking water tap
Once you understand the system, you realise it's actually quite elegant: simple, robust, and proven over decades. The one variable is the hard water — and that's easily managed with the right filters.
Laws, bureaucratic processes and everyday information in Cyprus change constantly. pundo.cy keeps you up to date — for expats in Cyprus, in multiple languages.