Backflow Prevention for Algarve Homes: Protect Your Drinking Water
Most homeowners only think about plumbing when something goes wrong. Backflow is different. It can happen quietly, without a leak, and it risks something far more important than a damp patch: the safety of your drinking water.
Backflow is when contaminated water flows backwards into the clean supply. It can occur through outdoor taps, garden hoses, appliance connections, irrigation points, and even certain indoor fixtures if the conditions are right. This article explains what backflow is, where Algarve homes are most vulnerable, what devices prevent it, and what a proper installation should look like.
WHAT BACKFLOW IS AND WHY IT MATTERS
Your home’s plumbing is designed for water to move in one direction: from the supply into your taps, showers and appliances. Backflow is the reverse, and it usually happens because of one of two forces:
* BACK-SIPHONAGE: when there’s a sudden drop in supply pressure (for example due to municipal works, a burst main, or heavy local demand), the system can “pull” water backwards.
* BACK-PRESSURE: when pressure on the property side becomes higher than the supply pressure (for example from pumps or elevated tanks in some setups), pushing water back towards the main line.
The problem is not the direction of flow alone. The danger is what that water may contain. A hose left in a bucket of dirty water, a garden sprayer with fertiliser residue, or stagnant water sitting...
