Gold Coast storm season officially runs November through April. We get the bulk of our annual rainfall in this window, intense electrical storms, the occasional severe weather event, and roughly every 3-5 years a cyclone tracks close enough to cause real damage. The plumbing failures we see during and after these events are largely preventable with proper pre-season prep. Done well, you avoid emergency callouts at the peak when every plumber is booked solid.
Here's the prep checklist we run with our own clients each October before the season hits. It is targeted at Gold Coast homes specifically, the failure patterns are different from inland Australia or southern states.
1. Clear gutters and downpipes before the first November storm
The single biggest source of post-storm plumbing damage is gutter overflow. When rain hits 50-100 mm in an hour (which Gold Coast storms routinely deliver), blocked gutters overflow into wall cavities, damage external paint, and saturate ground around the foundation. Saturated ground then puts pressure on under-slab drainage and can cause sewer backflow at lower floor wastes.
Get the gutters cleared by mid-October. Check downpipe outlets are flowing freely. Confirm any rainwater diverters to tanks are not blocked.
2. Test the stormwater drainage to council
Most Gold Coast suburban homes connect stormwater to council kerb or pit. The connection point develops blockages over years from leaves, sediment, and root invasion. Pour 20 litres of water at the rear downpipe outlet and watch how fast it appears at the kerb. If it pools or runs slowly, the line needs jetting before the season starts.
3. Check your sump pump (if you have one)
Some Gold Coast homes have below-grade basements, garages or laundries with a sump pump that lifts water to the stormwater drain. Pumps that have not run for 6+ months sometimes seize. Test by pouring 10-20 litres into the sump and confirming the pump activates and clears it. Replacement is $400-800 if it has failed.
4. Inspect external taps and hose-bib mounts
Storms hit external fittings hard, wind-driven debris, falling branches, and the occasional flying garden umbrella all damage exposed tapware. Walk around the property and confirm every external tap is secure, no visible damage, and the wall mount is solid. Failed external taps post-storm can leak unnoticed for days because the property is wet anyway.
5. For canal-front and waterfront homes, check pontoon water fittings
Canal-front pontoon water taps take a beating in storm conditions, fender impact, salt spray, sometimes wave action moving the pontoon enough to stress the supply line. Inspect, replace any damaged fittings before the season.
6. Test the water meter isolation valve
Storm-related emergencies often need fast water isolation. The meter valve must work. Test it now. If it is stiff, seized or leaking, we can replace for $200-400. Doing it in October beats discovering it does not work at 11 pm in a January thunderstorm.
7. Plan for the power outage
Gold Coast storms drop power across some suburbs every season. If you are on town water and town sewer, no issue, both still work. If you are on tank water with an electric pump, you have no water until power returns. If you are on acreage with an electric septic / AWTS, the system stops working until power returns and the holding tank may overflow.
Consider:
- Generator capacity for the pump and AWTS systems
- Battery backup for AWTS alarm panel (so you know if the system fails)
- Storage of 100-200 L of drinking water for households that have no town water fallback
8. Hot water unit storm prep
Gas continuous flow hot water units have pilot lights that can blow out in extreme wind. Storage units are largely unaffected. Heat pumps with outdoor compressors can be damaged by airborne debris, secure or shield if a severe weather warning is issued.
9. Cyclone-specific prep (when warning is issued)
When a cyclone watch or warning is issued for the Gold Coast:
- Fill bathtubs and large containers with water (in case mains supply is contaminated or cut)
- Turn off gas at the meter (for natural gas) or at bottles (for LPG) if cyclone landfall is expected
- Disconnect garden hoses from external taps
- Secure or move pontoon tapware to higher ground
- Charge phones, have torches accessible
10. What to do during a major rain event
If your house is taking on water:
- Turn off electricity at the main switch if water is near power points
- Turn off the water meter (rare, but if water ingress is causing plumbing fittings to fail, isolate the supply)
- Move valuables, electronics and soft furnishings to higher floors or covered tables
- Document with photos as it happens (for insurance)
- Stay out of flooded rooms with electrical risk
- Call us at 0472 657 042 if you have a specific plumbing failure (burst pipe, blocked drain causing backup), we can dispatch as soon as safe
What we see in the days after a storm
The post-storm callout pattern is consistent year after year:
- Day 1-2: Blocked drains backing up (debris and sediment have washed into the sewer)
- Day 2-5: External tap failures from wind damage (water now actively leaking because external taps are wet anyway)
- Day 3-7: Hot water unit failures (water ingress into casing, pilot light out, electrical fault from saturated mounting area)
- Week 2-3: Mould and slow-leak follow-on calls as water-damaged areas dry out and the real damage becomes visible
Insurance and storm damage
Most household policies cover storm-related water damage but exclusions vary. Read your PDS for storm damage exclusions, particularly around:
- Maintenance-related failures (e.g. unblocked gutter that overflows, claim sometimes contested)
- Flood vs storm cover (different categories with different cover)
- Sub-floor or below-grade water damage (often sub-limited)
Our cause-of-loss documentation supports most claims. Photograph everything, do not throw out damaged items until the insurer has assessed.
If you wait until December
December is too late for most prep. Every plumbing crew on the Gold Coast is fully booked through the season responding to active failures. Gutter cleaners are booked weeks out. Water cartage is at peak prices and delivery windows. Generators sold out. Get the prep done in October, the cost is the same and the availability is unlimited.
What we offer for storm season prep
We do a $360-580 whole-house pre-season audit covering all the points above, plus pressure-test the supply system and document any vulnerabilities. The cost is low compared to the cost of a single in-season emergency. Book before mid-October to lock in the availability.
Common questions
When does Gold Coast storm season actually start?+
Do I really need to drain my pipes before a cyclone?+
My power went out and I'm on tank water, what do I do?+
How long does post-storm emergency response usually take?+
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