Water Restrictions in Southern Spain: What Property Owners Must Know in 2026

Southern Spain's Water Challenge

Southern Spain has always been dry — Andalusia's climate is classified as semi-arid in many coastal areas. But the drought cycles have become more severe and more frequent. Between 2022 and 2025, Andalusia experienced its worst drought in recorded history, with reservoir levels dropping below 25% capacity across the Guadalhorce and Guadalmedina basins that supply the Costa del Sol.

For UK property buyers, this is not an abstract environmental issue. Water restrictions directly affect whether you can fill your pool, water your garden, wash your car, or even run a holiday rental at full capacity. Understanding the water situation is now an essential part of due diligence when buying property in southern Spain.

How Water Restrictions Work in Andalusia

Water restrictions in Spain are managed at two levels: the regional government (Junta de Andalucía) sets the framework, and individual municipalities implement specific rules. The Costa del Sol falls under the Cuenca Mediterránea Andaluza water authority.

Restriction Levels

The system operates on four escalating levels based on reservoir capacity and rainfall:

Level	Reservoir Status	Key Restrictions
Pre-alert (Prealerta)	Below 50%	Public awareness campaigns, voluntary savings encouraged
Alert (Alerta)	Below 40%	Garden watering limited to specific hours, car washing restricted, public fountain shutdown
Emergency (Emergencia)	Below 25%	Pool filling banned, garden watering banned or severely restricted, pressure reductions at night, fines for non-compliance
Exceptional Emergency	Below 15%	Potential supply cuts (rotating by neighbourhood), all non-essential use banned

Municipality-by-Municipality Variations

Not all Costa del Sol towns apply restrictions equally. Malaga city, for example, has invested heavily in desalination and reclaimed water, so it tends to maintain less severe restrictions than smaller towns that rely entirely on reservoir water. Marbella and Estepona have at times had stricter rules than Fuengirola or Torremolinos due to differences in their water supply sources.

Before buying, check the specific water situation in your target municipality. The local town hall (ayuntamiento) website will list current restrictions and any planned infrastructure improvements.

Impact on Swimming Pools

Pool restrictions are the issue that concerns property buyers most. The rules depend on the current restriction level:

• Normal conditions: pools can be filled and topped up without restriction
• Alert level: pools can be topped up but not filled from empty. New pool construction may require proof of a recirculation system
• Emergency level: pool filling and topping up from mains water is banned. Pools must be covered when not in use. Some municipalities allow topping up with delivered (tanker) water

Practical advice: if your property has a pool, keep it maintained year-round rather than draining it seasonally. A well-maintained pool needs only occasional topping up. Install a pool cover to reduce evaporation by up to 70% — this is both water-wise and often required during restrictions.

Can You Build a New Pool?

Building a new pool during drought restrictions is complicated but not always impossible. During alert phases, planning permission for new pools may be conditional on installing water-saving features (covers, recirculation, rainwater collection). During emergency phases, new pool construction is typically suspended.

If a pool is important to you, prioritise buying a property that already has one rather than planning to build later. Existing pools have established water rights that new construction does not.

Impact on Gardens

Traditional English-style gardens with lawns are increasingly impractical in southern Spain. During restrictions:

• Lawn watering is the first thing to be banned or limited to specific night-time hours (typically 22:00-08:00)
• Drip irrigation for established plants is usually still permitted, even during emergencies
• New planting may be restricted during the most severe phases

Xeriscaping: The Smart Alternative

Xeriscaping — landscaping with drought-resistant Mediterranean plants — is not just environmentally responsible; it protects your property value during water restrictions. Properties with xeriscape gardens can maintain their appearance when neighbours' lawns turn brown.

Popular xeriscape plants for the Costa del Sol:

• Bougainvillea — vibrant colour, extremely drought-tolerant once established
• Lavender — thrives in dry conditions, attracts pollinators
• Olive trees — quintessentially Mediterranean, minimal water needs
• Rosemary and thyme — fragrant, hardy, and practically indestructible
• Agave and aloe — architectural, zero-maintenance
• Lantana — colourful ground cover, handles heat and drought
• Jasmine — fragrant, moderate water needs once established

A professional xeriscape conversion for a medium garden costs €3,000-€8,000 and pays for itself through reduced water bills within 3-5 years.

Desalination Plants and Future Water Supply

The Junta de Andalucía has invested over €800 million in desalination capacity since 2023. Key plants serving the Costa del Sol:

• Marbella desalination plant: operational since 2005, expanded in 2024, capacity of 56,000 m³/day
• Malaga desalination plant (El Atabal): major expansion completed 2025, capacity of 60,000 m³/day
• Costa del Sol Occidental plant: under construction, expected operational by late 2026, capacity of 40,000 m³/day

Desalinated water is more expensive to produce (approximately €0.70-€0.90 per m³ vs €0.30-€0.50 for reservoir water), but it provides a drought-proof supply. Towns with desalination access tend to have less severe restrictions, which is worth considering when choosing where to buy.

Water Recycling and Reclaimed Water

Many Costa del Sol municipalities now use treated wastewater (agua regenerada) for irrigation of public parks, golf courses, and some agricultural uses. This reduces pressure on drinking water supplies. Some newer developments use a dual pipe system, with reclaimed water for garden irrigation and toilet flushing.

When viewing new-build properties, ask whether the development uses reclaimed water for communal gardens. This protects the community from water restrictions affecting common areas and keeps community fees stable.

Rainwater Harvesting: Legal and Practical

Collecting rainwater is legal in Spain for domestic use. There is no licence required for small-scale residential rainwater collection. A basic system costs €500-€2,000 and can capture significant water during Andalusia's autumn and winter rains (October-March typically provides 400-600mm of rainfall).

A 5,000-litre rainwater tank can provide enough water for 2-3 months of garden irrigation, significantly reducing your mains water consumption and keeping your garden alive during restrictions.

Bore Holes and Wells (Pozos)

Some properties, particularly rural fincas and villas on large plots, have private bore holes or wells. The legal situation:

• Existing registered wells with water rights (derechos de agua) are legal and valuable — they are noted in the property deed and can be a major advantage during restrictions
• New bore holes require permission from the Confederación Hidrográfica (water authority) and are increasingly difficult to obtain, especially during drought periods
• Unregistered wells are technically illegal and can result in fines. During property purchase, ensure any well is properly registered
• Water quality testing is essential if you plan to use well water for anything beyond garden irrigation

When buying a rural property with a well, always verify the registration status and current water flow. Some older wells have dried up during recent droughts, making the water rights worthless in practice.

Tips for Reducing Water Consumption

1. Install low-flow fixtures — modern taps and showerheads use 40-60% less water with no noticeable reduction in pressure
2. Fix leaks promptly — a dripping tap wastes 15-20 litres per day
3. Use a pool cover — reduces evaporation by up to 70% and keeps the pool cleaner
4. Water gardens at dawn or dusk — reduces evaporation losses by 30-50%
5. Install drip irrigation — uses 30-50% less water than sprinklers
6. Choose drought-resistant plants — a xeriscape garden uses 50-75% less water than a traditional garden
7. Install a dual-flush toilet — saves 3-6 litres per flush
8. Consider a greywater recycling system — reuses shower and washing machine water for garden irrigation

What This Means for Property Buyers

Water is not a reason to avoid buying in southern Spain — millions of people live comfortably here. But it should factor into your buying decision:

• Favour properties in municipalities with desalination access — Malaga, Marbella, and their surrounding towns are better positioned
• Xeriscape gardens over lawns — both for water savings and because lawns look terrible during restrictions
• If a pool is essential, buy a property that already has one rather than planning to build during uncertain restriction periods
• Check the community's water management for apartments — does the community use reclaimed water for gardens? Do they have a water-efficient irrigation system?
• Rural properties with registered wells have a genuine advantage during drought periods

Use MUNDO's property search to find properties that suit your requirements, and join the MUNDO Buyer Club to get advice from verified agents who understand local water infrastructure.