Getting a shock when you open your water bill is never fun. If your usage hasn’t changed much, but the cost has jumped, something is wrong. A sudden spike in water bills is usually linked to hidden plumbing issues — some small, some serious.
Here are the most common reasons your water bill might have gone up and what to do about them.
1. Hidden Leaks in Your Plumbing
The number one culprit is often leaks you can’t see. Even a small, continuous leak can waste thousands of litres a month.
- Leaks behind walls
- Underground pipe leaks
- Toilet cistern leaks
If you suspect a hidden issue, our leak detection service uses specialised equipment to locate it fast.
2. Dripping Taps and Showers
A single dripping tap can waste more than 20 litres a day. Multiply that across weeks or months and your bill will climb.
Check all taps and showers. If tightening doesn’t work, it may need a washer or cartridge replacement.
See our guide: Leaking Tap Repairs
3. Running Toilets
Toilets that don’t stop running are silent water wasters. You might not notice it, but your water meter does.
Our toilet plumbing experts can quickly diagnose and fix the issue before it costs you more.
4. Hot Water System Problems
Faulty hot water systems can waste water in two ways:
- Leaks around the tank or valves
- Inefficient heating cycles that cause more water use
Learn more in our hot water systems service.
5. Outdoor Leaks
Check for:
- Constantly damp patches in the garden
- Bubbling water near outdoor pipes
- Drips around outdoor taps and irrigation
These are often signs of underground leaks.
6. Faulty Appliances
Dishwashers and washing machines can develop small leaks or faulty fill cycles, using more water than normal.
If you’ve ruled out obvious plumbing issues, check your appliances next.
How to Detect a Leak Yourself
- Turn off all taps and appliances.
- Check your water meter.
- If the dial is still moving, water is escaping somewhere.
If you confirm a leak, call a plumber immediately to prevent further damage and rising bills.
When to Call a Professional
If your water bill is climbing and you can’t find the reason, it’s time for expert help. At ASAP Trades, we’re specialists in:
- Hidden leak detection
- Toilet and tap repairs
- Hot water system servicing
- Emergency plumbing
👉 Contact us today for same-day service.
Final Word
A sudden spike in your water bill usually isn’t bad luck — it’s a plumbing issue. The sooner you find and fix it, the less money and water you waste.
With 24/7 service and over 100 five-star reviews, ASAP Trades is Perth’s trusted team for fast, reliable plumbing repairs.
