Make a complete inventory
List outside taps, hose reels, connectors, pumps, watering timers, drip lines and rainwater containers. Mark hidden connections before fallen leaves or snow cover them. Some components are frost-resistant, while others need to be drained or brought indoors. Never assume that an outside tap is frost-proof solely because its handle looks modern. Consult the manufacturer or an installer if the type is unclear.
Drain safely
Shut off the relevant supply if your installation has an indoor isolating valve, and follow the system instructions. Disconnect loose hoses and let them drain completely before storage. Empty susceptible pumps, filters and timers as specified by their makers. Do not use compressed air on irrigation lines unless the system explicitly supports that procedure and you understand the safe operating limits. Excess pressure can damage fittings or cause injury.
Protect water quality
Connections to drinking-water systems require appropriate backflow protection under the applicable local plumbing rules. A garden hose dipped in a bucket or chemical solution should not be treated as a safe drinking-water connection. If the system needs alteration or a non-return device, use a qualified professional. Damaged seals and fittings should be labelled for replacement instead of being reinstalled next spring.
Review in spring
Before opening the tap fully, reconnect components carefully and check for small leaks. Flush and clean suitable filters according to their instructions. Pressure-test in stages, not while absent from home. Keep a note of hose and thread sizes so a replacement part matches the actual connection rather than just a product photograph.
Continue with the seasonal calendar or browse the plant directory before adapting the steps to local conditions.